What are Prime Numbers?

Which can be divided by any Number

Which can be divided by Odd Numbers

Which can be divided by Even Numbers

Which can be divided by Number 1 & by itself Number

Which can be divided by any Number

162 + Mcqs in Basic Maths in Mathematics Quizzes Page 1 McqOptions

1.	What are Prime Numbers?
A.	Which can be divided by Odd Numbers
B.	Which can be divided by Even Numbers
C.	Which can be divided by Number 1 & by itself Number
D.	Which can be divided by any Number
Answer» D. Which can be divided by any Number

Discussion

2.	Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?
A.	Rs.3
B.	Rs.4.50
C.	Rs.5.00
D.	Rs.7.50
Answer» D. Rs.7.50

Discussion

3.	Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively. If the both taps are opened together, the tank will be full in_________?
A.	3 hrs.
B.	4 hrs,
C.	5 hrs.
D.	6 hrs.
Answer» E.

Discussion

4.	Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes respectively. Simultaneously both the pipes are opened together, then after how much time Q should be closed so that the tank is full in 9 min ?
A.	2 min
B.	3 min
C.	4 min
D.	5 min
Answer» D. 5 min

Discussion

5.	Two pipes P and Q can fill a cistern in 12 min. and 15 min. respectively but a third pipe ‘R’ can empty the full tank in 6 min. P and Q are kept open for 5 min. in the beginning and then ‘R’ is also opened. In what time is the cistern emptied ?
A.	30 min
B.	35 min
C.	40 min
D.	45 min
Answer» E.

Discussion

6.	Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?
A.	3 : 4
B.	4 : 3
C.	5 : 3
D.	Data inadequate
Answer» C. 5 : 3

Discussion

7.	Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.
A.	3:4
B.	5:4
C.	4:3
D.	5:3
Answer» D. 5:3

Discussion

8.	To fill a cistern, pipes P, Q & R take 20, 15 & 12 minutes respectively. The time in minutes that the three pipes together will take to fill the cistern is:__________?
A.	5 min
B.	10 min
C.	15 min
D.	20 min
Answer» B. 10 min

Discussion

9.	The total marks obtained by a student in Mathematics and Physics is 60 and his score in Chemistry is 20 marks more than that in Physics. Find the average marks scored in Mathematics and Chemistry together.
A.	40
B.	30
C.	25
D.	Data inadequate
Answer» B. 30

Discussion

10.	The sum of five numbers is 655. The average of the first two numbers is 85 and the third number is 125. Find the average of the two numbers?
A.	180
B.	170
C.	190
D.	175
Answer» B. 170

Discussion

11.	The speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. The speed of the stream is_______?
A.	5km/hr
B.	8 km/hr
C.	10 km/hr
D.	15 km/hr
Answer» B. 8 km/hr

Discussion

12.	The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?
A.	1.5km/hr
B.	3km/hr
C.	1km/hr
D.	none
Answer» D. none

Discussion

13.	The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?
A.	10 seconds
B.	15 seconds
C.	20 seconds
D.	12 seconds
E.	None of these
Answer» E. None of these

Discussion

14.	The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest).
A.	18 years
B.	14 years
C.	20 years
D.	16 years
Answer» D. 16 years

Discussion

15.	The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?
A.	35.2
B.	36.1
C.	36.5
D.	39.1
Answer» D. 39.1

Discussion

16.	The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.
A.	57.4
B.	57.5
C.	58.9
D.	59.1
Answer» E.

Discussion

17.	The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?
A.	6 kmph
B.	7 kmph
C.	8.5 kmph
D.	8 kmph
Answer» B. 7 kmph

Discussion

18.	The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average of the team?
A.	23 years
B.	24 years
C.	25 years
D.	None of these
Answer» B. 24 years

Discussion

19.	The average weight of a group of persons increased from 48 kg to 51 kg, when two persons weighing 78 kg and 93 kg join the group. Find the initial number of members in the group?
A.	21
B.	22
C.	23
D.	24
Answer» D. 24

Discussion

20.	The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally?
A.	4
B.	5
C.	6
D.	7
Answer» B. 5

Discussion

21.	The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?
A.	17 kg
B.	20 kg
C.	26 kg
D.	31 kg
Answer» E.

Discussion

22.	The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?
A.	55 kg
B.	62 kg
C.	56 kg
D.	None
Answer» E.

Discussion

23.	The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?
A.	1540
B.	960
C.	840
D.	1020
Answer» E.

Discussion

24.	The average salary of workers in an industry is Rs.200 the average salary of technicians being Rs.400 and that of non-technicians being Rs.125. What is the total number of workers?
A.	250
B.	275
C.	550
D.	400
Answer» D. 400

Discussion

25.	The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?
A.	20
B.	21
C.	22
D.	23
Answer» C. 22

Discussion

26.	The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?
A.	3000
B.	2500
C.	4500
D.	5000
Answer» D. 5000

Discussion

27.	The average of non-zero number and its square is 5 times the number. The number is__________?
A.	9
B.	17
C.	29
D.	295
Answer» B. 17

Discussion

28.	The average of five results is 46 and that of the first four is 45. The fifth result is__________?
A.	1
B.	10
C.	12.5
D.	50
Answer» E.

Discussion

29.	The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is__________?
A.	25
B.	27
C.	30
D.	35
Answer» E.

Discussion

30.	The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
A.	2
B.	5
C.	8
D.	Cannot be determined
Answer» D. Cannot be determined

Discussion

31.	The average of first ten prime numbers which are odd is____________?
A.	12.9
B.	13.8
C.	15.8
D.	17
Answer» D. 17

Discussion

32.	The average of first five prime numbers greater than 20 is____________?
A.	31.00
B.	31.01
C.	32.00
D.	32.2
Answer» E.

Discussion

33.	The average of first 10 natural numbers is____________?
A.	5
B.	5.5
C.	6.5
D.	6
Answer» C. 6.5

Discussion

34.	The average of first 10 even numbers is___________?
A.	18
B.	22
C.	9
D.	11
Answer» E.

Discussion

35.	The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?
A.	9
B.	8
C.	7
D.	6
Answer» B. 8

Discussion

36.	The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?
A.	15 years
B.	17 years
C.	18 years
D.	19 years
Answer» E.

Discussion

37.	The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?
A.	125
B.	134
C.	170
D.	98
Answer» B. 134

Discussion

38.	The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is___________?
A.	123
B.	137
C.	121
D.	122
Answer» E.

Discussion

39.	The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________?
A.	11.0
B.	11.3
C.	11.4
D.	11.5
Answer» E.

Discussion

40.	The average of 10 numbers is 23. If each number is increased by 4, what will the new average?
A.	22
B.	27
C.	25
D.	29
Answer» C. 25

Discussion

41.	The average monthly salary of 20 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 100. What is the manager’s monthly salary?
A.	Rs. 2000
B.	Rs. 2400
C.	Rs. 3600
D.	Rs. 4800
Answer» D. Rs. 4800

Discussion

42.	The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is____________?
A.	Rs. 3500
B.	Rs. 4000
C.	Rs. 4050
D.	Rs. 5000
Answer» C. Rs. 4050

Discussion

43.	The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?
A.	50
B.	47.5
C.	59
D.	52.5
Answer» E.

Discussion

44.	The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?
A.	20
B.	25
C.	30
D.	32
Answer» C. 30

Discussion

45.	The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .
A.	149
B.	151
C.	152
D.	153
Answer» C. 152

Discussion

46.	The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places)?
A.	179.29 cm
B.	178.29 cm
C.	179.38 cm
D.	178.39 cm
Answer» C. 179.38 cm

Discussion

47.	The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?
A.	15
B.	9
C.	18
D.	21
Answer» C. 18

Discussion

48.	The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?
A.	1:2
B.	2:3
C.	3:4
D.	3:5
Answer» C. 3:4

Discussion

49.	The average age of seven persons sitting in a row facing east is 28 years. If the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then find the age of the person sitting in the middle of the row?
A.	30 Years
B.	31 years
C.	26 years
D.	33 years
Answer» C. 26 years

Discussion

50.	The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?
A.	1 year
B.	2 years
C.	3 years
D.	4 years
Answer» E.

Discussion

Explore topic-wise MCQs in Mathematics Quizzes.

What are Prime Numbers?

Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?

Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively. If the both taps are opened together, the tank will be full in_________?

Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes respectively. Simultaneously both the pipes are opened together, then after how much time Q should be closed so that the tank is full in 9 min ?

Two pipes P and Q can fill a cistern in 12 min. and 15 min. respectively but a third pipe ‘R’ can empty the full tank in 6 min. P and Q are kept open for 5 min. in the beginning and then ‘R’ is also opened. In what time is the cistern emptied ?

Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?

Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.

To fill a cistern, pipes P, Q & R take 20, 15 & 12 minutes respectively. The time in minutes that the three pipes together will take to fill the cistern is:__________?

The total marks obtained by a student in Mathematics and Physics is 60 and his score in Chemistry is 20 marks more than that in Physics. Find the average marks scored in Mathematics and Chemistry together.

The sum of five numbers is 655. The average of the first two numbers is 85 and the third number is 125. Find the average of the two numbers?

The speed of a boat in still water is 5 km/hr, it can go 30km upstream and return downstream to the original point in 4 hours 30 min. The speed of the stream is_______?

The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?

The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?

The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?

The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.

The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average of the team?

The average weight of a group of persons increased from 48 kg to 51 kg, when two persons weighing 78 kg and 93 kg join the group. Find the initial number of members in the group?

The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally?

The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?

The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?

The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?

The average salary of workers in an industry is Rs.200 the average salary of technicians being Rs.400 and that of non-technicians being Rs.125. What is the total number of workers?

The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?

The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?

The average of non-zero number and its square is 5 times the number. The number is__________?

The average of five results is 46 and that of the first four is 45. The fifth result is__________?

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is__________?

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?

The average of first ten prime numbers which are odd is____________?

The average of first five prime numbers greater than 20 is____________?

The average of first 10 natural numbers is____________?

The average of first 10 even numbers is___________?

The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?

The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?

The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?

The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is___________?

The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________?

The average of 10 numbers is 23. If each number is increased by 4, what will the new average?

The average monthly salary of 20 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 100. What is the manager’s monthly salary?

The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is____________?

The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .

The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?

The average age of seven persons sitting in a row facing east is 28 years. If the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then find the age of the person sitting in the middle of the row?

The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?