Explore topic-wise MCQs in Aptitude.

This section includes 559 Mcqs, each offering curated multiple-choice questions to sharpen your Aptitude knowledge and support exam preparation. Choose a topic below to get started.

1.

An army of 12000 consists of Europeans and Indians. The average height of a European is 5ft 10 inches and that
of an Indian is 5ft 9 inches and that of the whole army is 5ft 93inches.
4
Then the number of Indians in the army is

A. 3000
B. 4000
C. 5500
D. 2700
Answer» B. 4000
Discussion
2.

The average age of two boys and their father is greater then average age of those two boys and their mother by 3 yr. The average age of the four is 19 yr. If the average age of the two boys be 51/2, then find the age of the father and mother.

A. 37 yr and 28 yr
B. 47 yr and 38 yr
C. 50 yr and 41 yr
D. 35 yr and 32 yr
Answer» B. 47 yr and 38 yr
Discussion
3.

Average weight of three boys P, T and R is 541/3 kg, while the average weight of three boys T, F and G is 53 kg. What is the average weight of P, T, R, F and G ?

A. 53.8 kg
B. 52.4 kg
C. 53.4 kg
D. Cannot be determined
E. None of the above
Answer» E. None of the above
Discussion
4.

The average of x1, x2 and x3 is 14. Twice the sum of x2 and x3 is 30. What is the value of x1 ?

A. 20
B. 27
C. 16
D. 2
Answer» C. 16
Discussion
5.

If the average of m numbers is n2 and that of n numbers is m2,then average of (m + n) numbers is
A. m/n
B. m + n
C. mn
D. m n
Answer» D. m n
Discussion
6.

The average age of 54 girls in a class was calculated as 14 yr. It was later relized that the actual age of one of the girls in the class was 10.5 yr but it was calculated as 13 yr. What is the actual averge age (round off) of the the girls in the class ? (Find the approximate answer.)

A. 10.50 yr.
B. 12.50 yr
C. 12 yr
D. 14 yr
E. None of the above
Answer» E. None of the above
Discussion
7.

The average of 5 consedutive old posstive integers is 9. The least one amonge them
is

A. 5
B. 3
C. 1
D. 7
Answer» B. 3
Discussion
8.

The mean temperature of Monday to Wednesday was 37 C and of Tuesday to Thursday was 34 C . If in the temperature on Thursday was 4/5th that of Monday, what was temperature on Thursday ?

A. 34 C
B. 35.5 C
C. 36 C
D. 36.5 C
Answer» D. 36.5 C
Discussion
9.

The average of eight numbers is 20. If the sum of first two numbers is 31, the average of the next three numbers
is 211and the seventh and eighth numbers exceed the sixth number by 4 and 7 respectively, then the eighth number is
3
A. 20
B. 25
C. 21.6
D. 25.3
Answer» C. 21.6
Discussion
10.

The average weight of the 8 oarsmen in boat is increased by 11 /2 kg when one of the crew who weighs 60 kg is replaced by a new man. The weight of the new man (in kg) is

A. 70 kg
B. 68 kg
C. 71 kg
D. 72 kg
Answer» E.
Discussion
11.

The arithmetic mean of the following numbers
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is

A. 4
B. 5
C. 14
D.
E. 20
Answer» C. 14
Discussion
12.

The average of x numbers is y2 and the average of y numbers is x2. So the average of all the numbers taken together is

A. xy
B. xy
C. + yx
Answer» C. + yx
Discussion
13.

If average of 20 observations x1, x2, ....., x20 is y, then the average of x1 101, x2 101, x3 101, ....., x20 101 is

A. y 20
B. y 101
C. 20y
D. 101y
Answer» C. 20y
Discussion
14.

The average marks of 32 boys of section A of class X is 60 whereas the average marks of 40 boys of section B of class X is 33. The average marks for both the sections combined together is
A. 44
B. 45
Answer» C.
Discussion
15.

The average of 8 numbers is 20. The average of first two numbers is
15
1
and that of the next three is 21
1
 If the sixth number be less than the
23
seventh and eighth numbers by 4 and 7 respectively, then the eighth number is :

A. 18
B. 22
C. 25
D. 27
Answer» D. 27
Discussion
16.

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. 31 kg.
B. 32 kg.
C. 29.5 kg.
D. 35 kg
Answer» B. 32 kg.
Discussion
17.

The average of n numbers x1, x2, .... xn is x . Then the value of (xi - x) , ( i = 1 .......... n ) is equal to

A. n
B. 0
C. n
Answer» C. n
Discussion
18.

3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is
A. 1 year
B. 2 years
C. 3 years
Answer» D.
Discussion
19.

The frequency distribution data is given below. If the average age is 17 years, the value of m is
Age (in years) : 8 20 26 29
Number of people : 3 2 m 1

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
20.

A student was asked to find the arithmetic mean of the following 12 numbers :
3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and y
He found the mean to be 12. The value of y will be :

A. 3
B. 7
C. 17
D. 31
Answer» C. 17
Discussion
21.

In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
A. 6.25
B. 6.5
C. 6.75
D. 7
Answer» B. 6.5
Discussion
22.

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
23.

The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

A. 47.55 kg
B. 48 kg
C. 48.55 kg
D. 49.25 kg
Answer» D. 49.25 kg
Discussion
24.

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:

A. 53.33
B. 54.68
C. 55
D. None of these
Answer» C. 55
Discussion
25.

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:

A. 35 years
B. 40 years
C. 50 years
D. None of these
Answer» C. 50 years
Discussion
26.

A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?
A. Rs. 7.98
B. Rs. 8
C. Rs. 8.50
D. Rs. 9
Answer» B. Rs. 8
Discussion
27.

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother doest not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?
A. 67 kg.
B. 68 kg.
C. 69 kg.
D. Data inadequate
E. None of these
Answer» B. 68 kg.
Discussion
28.

A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
A. Rs. 4991
B. Rs. 5991
C. Rs. 6001
D. Rs. 6991
Answer» B. Rs. 5991
Discussion
29.

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

A. 0
B. 1
C. 10
D. 19
Answer» E.
Discussion
30.

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

A. 3500
B. 4000
C. 4050
D. 5000
Answer» C. 4050
Discussion
31.

A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:

A. 250
B. 276
C. 280
D. 285
Answer» E.
Discussion
32.

A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). The number of pupils in the class is:
A. 10
B. 20
C. 40
D. 73
Answer» D. 73
Discussion
33.

A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
A. <table class="ga-tbl-answer" cellpadding="0" cellspacing="0"> <tbody><tr class="ga-tr-divident" align="center"> <td class="ga-td-line" rowspan="2">28 </td> <td class="ga-td-divident">4</td> <td class="ga-td-line-lpad" rowspan="2">years</td> </tr> <tr class="ga-tr-divisor" align="center"> <td class="ga-td-divisor">7</td> </tr> </tbody></table>
B. <table class="ga-tbl-answer" cellpadding="0" cellspacing="0"> <tbody><tr class="ga-tr-divident" align="center"> <td class="ga-td-line" rowspan="2">31 </td> <td class="ga-td-divident">5</td> <td class="ga-td-line-lpad" rowspan="2">years</td> </tr> <tr class="ga-tr-divisor" align="center"> <td class="ga-td-divisor">7</td> </tr> </tbody></table>
C. <table class="ga-tbl-answer" cellpadding="0" cellspacing="0"> <tbody><tr class="ga-tr-divident" align="center"> <td class="ga-td-line" rowspan="2">32 </td> <td class="ga-td-divident">1</td> <td class="ga-td-line-lpad" rowspan="2">years</td> </tr> <tr class="ga-tr-divisor" align="center"> <td class="ga-td-divisor">7</td> </tr> </tbody></table>
D. None of these
Answer» C. <table class="ga-tbl-answer" cellpadding="0" cellspacing="0"> <tbody><tr class="ga-tr-divident" align="center"> <td class="ga-td-line" rowspan="2">32 </td> <td class="ga-td-divident">1</td> <td class="ga-td-line-lpad" rowspan="2">years</td> </tr> <tr class="ga-tr-divisor" align="center"> <td class="ga-td-divisor">7</td> </tr> </tbody></table>
Discussion
34.

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
A. 76 kg
B. 76.5 kg
C. 85 kg
D. Data inadequate
E. None of these
Answer» D. Data inadequate
Discussion
35.

The average age of P, Q, R and S is 30 years. How old is R?

I.

The sum of ages of P and R is 60 years.

II.

S is 10 years younger than R.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer
Answer» E. Both I and II are necessary to answer
Discussion
36.

How many candidates were interviewed everyday by the panel A out of the three panels A, B and C?

I.

The three panels on average interview 15 candidates every day.

II.

Out of a total of 45 candidates interviewed everyday by the three panels, the number of candidates interviewed by panel A is more by 2 than the candidates interviewed by panel c and is more by 1 than the candidates interviewed by panel B.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer
Answer» C. Either I or II alone sufficient to answer
Discussion
37.

What is the average age of children in the class?

I.

The age of the teacher is as many years as the number of children.

II.

Average age is increased by 1 year if the teacher's age is also included.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer
Answer» E. Both I and II are necessary to answer
Discussion
38.

In a cricket team, the average age of eleven players in 28 years. What is the age of the captain?

I.

The captain is eleven years older than the youngest player.

II.

The average age of 10 players, other than the captain is 27.3 years.

III.

Leaving aside the captain and the youngest player, the average ages of three groups of three players each are 25 years, 28 years and 30 years respectively.

A. Any two of the three
B. All I, II and III
C. II only or I and III only
D. II and III only
E. None of these
Answer» D. II and III only
Discussion
39.

How many marks did Tarun secure in English?

I.

The average mark obtained by Tarun in four subjects including English is 60.

II.

The total marks obtained by him in English and Mathematics together are 170.

III.

The total marks obtained by him in Mathematics and Science together are 180.

A. I and II only
B. II and III only
C. I and III only
D. All I, II and III
E. None of these
Answer» F.
Discussion
40.

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 age of the team?

A. 23 years
B. 24 years
C. 25 years
D. None of these
Answer» B. 24 years
Discussion
41.

A batsman has a certain average of runs for 14th innings. He scores 72 runs in the 15th innings, thus his average increased by 2. Find the average after 15th innings.

A. 44
B. 46
C. 42
D. 48
Answer» B. 46
Discussion
42.

The Average of 5 observation is 15. If three new observation 16.5, 18 and 14.5 be added. Then find the new average.

A. 14.8
B. 15.5
C. 16.2
D. 15.6
Answer» C. 16.2
Discussion
43.

The average of x

A. 20
B. 27
C. 16
D. 2
Answer» C. 16
Discussion
44.

The average age of 45 students in a class in 13 yr, 15 new students with an average age of 18 yr join the class. What is the average age of all the students in the class?

A. 13.15 yr
B. 14.25 yr
C. 12.28 yr
D. 16.42 yr
Answer» C. 12.28 yr
Discussion
45.

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

A. 20
B. 21
C. 23
D. 22
Answer» C. 23
Discussion
46.

The average age of 15 students of a class is 15 years. Out of these the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is

A. 11 years
B. 15 years
C. <table><tr><td rowspan="2">15</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">2</td><td rowspan="2">year</td></tr><tr><td style="text-align: center;">7</td></tr></table>
D. 14 years
Answer» B. 15 years
Discussion
47.

The average salary of the entire staff in an office is 200 per day. The average salary of officers is 550 and that of non officers is 120. If the number of officers is 16, then find the number of non officers in the office.

A. 72
B. 60
C. 70
D. 65
Answer» D. 65
Discussion
48.

The average of the three numbers x, y and z is 45. x is greater than the average of y and z by 9. The average of y and z is greater than y by 2. Then the difference of x and zis

A. 3
B. 5
C. 7
D. 11
Answer» D. 11
Discussion
49.

The average salary of all staff of a school is 10,000. The average salary of 20 teaching staff is 12,000 and that of non-teaching staff is 5000, the number of non-teaching staff will be

A. 7
B. 8
C. 10
D. 12
Answer» C. 10
Discussion
50.

In a prep school, the average weight of 30 girls in a class among 50 students is 16 kg and that of the remaining students is 15.5 kg. What is the average weight of all the students in the class ?

A. 15.2 kg.
B. 15.8 kg.
C. 15.4 kg.
D. 15.6 kg.
Answer» C. 15.4 kg.
Discussion