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MCQOPTIONS
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.
| 301. |
The average of makrs of 17 students in an examination was calculated as 71. But it was later found that the mark of one student had been wrongly entered as 65 instead of 56 and another as 24 instead of 50. The correct average is |
| A. | 70 |
| B. | 71 |
| C. | 72 |
| D. | 73 |
| Answer» D. 73 | |
| 302. |
If the difference between the average of x, y and y, z is 12, then the difference between x and z is : |
| A. | 24 |
| B. | 48 |
| C. | 12 |
| D. | 6 |
| Answer» B. 48 | |
| 303. |
The average of nine consecutive odd numbers is 53. The least odd number is |
| A. | 22 |
| B. | 27 |
| C. | 35 |
| D. | 45 |
| Answer» E. | |
| 304. |
Nine students of a class contribute a certain sum of money. Seven of them gave Rs. 50 each and the other two gave respectively Rs. 50 and Rs. 90 more than the others. The average contribution of the class of 9 students is : |
| A. | Rs. 70 |
| B. | Rs. 50 |
| C. | Rs. 100 |
| D. | Rs. 120 |
| Answer» B. Rs. 50 | |
| 305. |
In a class, average height of all students is a cms. Among them, average height of 10 students is b cms and the average height of the remaining students is c cms. Find the number of students in the class. (Here a > c and b > c ) |
| A. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>(a(b - c))</center></td></tr><tr><td style="text-align: center;">(a - c)</td></tr></table> |
| B. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>(b - c)</center></td></tr><tr><td style="text-align: center;">(a - c)</td></tr></table> |
| C. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>(b - c)</center></td></tr><tr><td style="text-align: center;">10 (a - c)</td></tr></table> |
| D. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>10(b - c)</center></td></tr><tr><td style="text-align: center;">(a - c)</td></tr></table> |
| Answer» E. | |
| 306. |
The average of a, b and c is 20 and that of b, c and d is 25. If d = 30, then the value of a is : |
| A. | 25 |
| B. | 45 |
| C. | 30 |
| D. | 15 |
| Answer» E. | |
| 307. |
Average of n numbers is a. The first number is increased by 2, second one is increased by 4, the third one is increased by 8 and so on. The average of the new numbers is |
| A. | <table><tr><td rowspan="2">a + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2<sup>n-1</sup> - 1</center></td></tr><tr><td style="text-align: center;">n</td></tr></table> |
| B. | <table><tr><td rowspan="2">a + 2</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2<sup>n-1</sup> - 1</center></td></tr><tr><td style="text-align: center;">n</td></tr></table> |
| C. | <table><tr><td rowspan="2">a + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2<sup>n-1</sup></center></td></tr><tr><td style="text-align: center;">n</td></tr></table> |
| D. | <table><tr><td rowspan="2">a + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2<sup>n</sup> - 1</center></td></tr><tr><td style="text-align: center;">n</td></tr></table> |
| Answer» C. <table><tr><td rowspan="2">a + </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2<sup>n-1</sup></center></td></tr><tr><td style="text-align: center;">n</td></tr></table> | |
| 308. |
Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is |
| A. | 23 |
| B. | 25 |
| C. | 28 |
| D. | 21 |
| Answer» B. 25 | |
| 309. |
The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The average of the remaining two numbers is |
| A. | 4.6 |
| B. | 4.5 |
| C. | 4.8 |
| D. | 4.7 |
| Answer» B. 4.5 | |
| 310. |
The average of the largest and smallest 3 digit numbers formed by 0 , 2 and 4 would be |
| A. | 312 |
| B. | 213 |
| C. | 222 |
| D. | 303 |
| Answer» B. 213 | |
| 311. |
Three numbers are such that the average of first two numbers is 2, the average of the last two numbers is 3 and the average of the first and the last numbers is 4, then the average of three numbers is equal to |
| A. | 2 |
| B. | 3.5 |
| C. | 3 |
| D. | 2.5 |
| Answer» D. 2.5 | |
| 312. |
The average of 5 consecutive natural numbers is m. If the next three natural numbers are also included, how much more than m will the average of these 8 numbers be? |
| A. | 2 |
| B. | 1 |
| C. | 1.4 |
| D. | 1.5 |
| Answer» E. | |
| 313. |
The average of first nine prime numbers is |
| A. | 9 |
| B. | 11 |
| C. | <table><tr><td rowspan="2">11</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td></tr><tr><td style="text-align: center;">9</td></tr></table> |
| D. | <table><tr><td rowspan="2">11</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td></tr><tr><td style="text-align: center;">9</td></tr></table> |
| Answer» E. | |
| 314. |
The average of two numbers is 8 and the average of other three numbers is 3. The average of the five numbers is : |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 315. |
The average of 13 results is 70. The average of first seven is 65 and that of the last seven is 75, the seventh result is : |
| A. | 67 |
| B. | 70 |
| C. | 68 |
| D. | 70.5 |
| Answer» C. 68 | |
| 316. |
The average of three consecutive odd numbers is 12 more than one third of the first of these numbers. What is the last of the three numbers ? |
| A. | 15 |
| B. | 17 |
| C. | 19 |
| D. | Data inadequate |
| Answer» D. Data inadequate | |
| 317. |
The arithmetic mean (average) of the first 10 whole numbers is |
| A. | 5 |
| B. | 4 |
| C. | 5.5 |
| D. | 4.5 |
| Answer» E. | |
| 318. |
The average of the squares of first ten natural numbers is |
| A. | 35.5 |
| B. | 36 |
| C. | 37.5 |
| D. | 38.5 |
| Answer» E. | |
| 319. |
The average of 8 numbers is 20. The average of first two numbers is |
| A. | 18 |
| B. | 22 |
| C. | 25 |
| D. | 27 |
| Answer» D. 27 | |
| 320. |
The average of 9 numbers is 30. The average of first 5 numbers is 25 and that of the last 3 numbers is 35. What is the 6th number? |
| A. | 20 |
| B. | 30 |
| C. | 40 |
| D. | 50 |
| Answer» D. 50 | |
| 321. |
In an examination the average marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was |
| A. | 50 |
| B. | 52 |
| C. | 60 |
| D. | 74 |
| Answer» E. | |
| 322. |
The average revenues of 7 consecutive years of a company is Rs. 75 lakhs. If the average of first 4 years is Rs. 70 lakhs and that of last 4 years is Rs. 82 lakhs, what will be the revenue for the 4th year ? |
| A. | Rs. 85 lakhs |
| B. | Rs. 83 lakhs |
| C. | Rs. 81 lakhs |
| D. | Rs. 79 lakhs |
| Answer» C. Rs. 81 lakhs | |
| 323. |
The average of 100 observations was calculated as 35. It was found later, that one of the observations was misread as 83 instead of 53. The correct average is : |
| A. | 32.7 |
| B. | 34.7 |
| C. | 35.7 |
| D. | 36.7 |
| Answer» C. 35.7 | |
| 324. |
The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 . The average temperature for Tuesday, Wednesday, Thursday and Friday was 52 , If the temperature on Monday was 42 , then the temperature on Friday was (in degrees) |
| A. | 58 |
| B. | 56 |
| C. | 52 |
| D. | 50 |
| Answer» B. 56 | |
| 325. |
The average temperature of the first 4 days of a week was 37 C and that of the last 4 days of the week was 41 C. If the average temperature of the whole week was 39 C, the temperature of the fourth day was |
| A. | 38 C |
| B. | 38.5 C |
| C. | 39 C |
| D. | 40 C |
| Answer» D. 40 C | |
| 326. |
The average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E whose weight is 3 kg more then that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. Then weight of A is |
| A. | 72 kg. |
| B. | 74 kg. |
| C. | 75 kg. |
| D. | 76 kg |
| Answer» D. 76 kg | |
| 327. |
The average of some natural numbers is 15. If 30 is added to first number and 5 is subtracted from the last number the average becomes 17.5 then the number of natural number is |
| A. | 15 |
| B. | 30 |
| C. | 20 |
| D. | 10 |
| Answer» E. | |
| 328. |
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 (in kg) of B is |
| A. | 20 |
| B. | 26 |
| C. | 31 |
| D. | 17 |
| Answer» D. 17 | |
| 329. |
There are 100 students in 3 sections A, B and C of a class. The average marks of all the 3 sections was 84. The average of B and C was 87.5 and the average marks of A is 70. The number of students in A was |
| A. | 30 |
| B. | 35 |
| C. | 20 |
| D. | 25 |
| Answer» D. 25 | |
| 330. |
The arithmetic mean of the following numbers |
| A. | 4 |
| B. | 5 |
| C. | 14 |
| D. | |
| E. | 20 |
| Answer» C. 14 | |
| 331. |
The average of 20 numbers is 15 and the average of first five is 12. The average of the rest is |
| A. | 16 |
| B. | 15 |
| C. | 14 |
| D. | 13 |
| Answer» B. 15 | |
| 332. |
A man bought 13 articles at 70 each, 15 at 60 each and 12 at 65 each. The average price per article is |
| A. | 60.25 |
| B. | 64.75 |
| C. | 65.75 |
| D. | 62.25 |
| Answer» C. 65.75 | |
| 333. |
The average of n numbers x |
| A. | n |
| B. | 0 |
| C. | n |
| D. | <span style="text-decoration: overline;">x</span> |
| E. | <span style="text-decoration: overline;">x</span> |
| Answer» C. n | |
| 334. |
The average weight of a class of 40 students is 40 kg. If the weight of the teacher be included , the average weight increases by 500 gm . The weight of the teacher is ? |
| A. | 40.5 kg |
| B. | 60 kg |
| C. | 60.5 kg |
| D. | 62 kg |
| Answer» D. 62 kg | |
| 335. |
The average age of four players is 18.5 years. If the age of the coach is also included, the average age increases by 20%. The age of the coach is ? |
| A. | 28 years |
| B. | 31 years |
| C. | 34 years |
| D. | 37 years |
| Answer» E. | |
| 336. |
The ratio of ages of the father and the daughter at present is 3 : 1. Four year ago the ratio was 4 : 1 . The average age of the father and daughter 2 year hence will be |
| A. | 24 |
| B. | 26 |
| C. | 25 |
| D. | 36 |
| Answer» B. 26 | |
| 337. |
The average earning of a mechanic for the first-four days of a week is Rs. 18 and for the last four days is Rs. 22. If he earns Rs . 20 on the fourth day, his average earning for the whole week is ? |
| A. | Rs . 18.95 |
| B. | Rs 16 |
| C. | Rs. 20 |
| D. | Rs. 25.71 |
| Answer» D. Rs. 25.71 | |
| 338. |
The average of three number is 42. The first is twice the second and the second is twice the third the different between the third largest and the smallest number number is ? |
| A. | 18 |
| B. | 36 |
| C. | 54 |
| D. | 72 |
| Answer» D. 72 | |
| 339. |
The average salary per head of all the workers in a workshop is Rs. 850, if the average salary per head of 7 technician is Rs. 1000 and the average salary per head of the rest is Rs 780, the total number of workers in the work- shop is ? |
| A. | 18 |
| B. | 20 |
| C. | 22 |
| D. | 24 |
| Answer» D. 24 | |
| 340. |
The average weight of 8 men is increased by 2kg when one of the men whose weight is 50 kg is replaced by a new man . The weight of the new man is ? |
| A. | 52 kg |
| B. | 58 kg |
| C. | 66 kg |
| D. | 68 kg |
| Answer» D. 68 kg | |
| 341. |
Last year Sahara, Tata, Singhania and Birla each has 250 industries. This year everyone has sold out 10 factories due to the recession of the economy and poor turnout. The average number of industries which of them now has |
| A. | 260 |
| B. | 240 |
| C. | 25 |
| D. | none of these |
| Answer» C. 25 | |
| 342. |
The average age of four children in a family is 12 years. If the spacing between their ages is 4 years, the age of the youngest child is ? |
| A. | 6 years |
| B. | 7 years |
| C. | 8 years |
| D. | 9 years |
| Answer» B. 7 years | |
| 343. |
Out of the three annual examinations, each with a total of 500 marks, a student secured average marks of 45% and 55% in the first and second annual examinations. To have an overall average of 60%, how many marks does the student need to secure in the third annual examination ? |
| A. | 450 |
| B. | 400 |
| C. | 350 |
| D. | 300 |
| Answer» C. 350 | |
| 344. |
The average age of women and child workers in a factory was 15 yr. The average age of all the 16 children was 8 yr and average age of women workers was 22 yr. If 10 women workers were married, then the number of unmarried women workers was. |
| A. | 16 |
| B. | 12 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 345. |
If the average age of Dinesh and Mahesh is 16 yr, the average age of Mahesh and Rahul is 13 yr and the average age of Dinesh and Rahul is 14 yr, then what is the age of Mahesh? |
| A. | 15 yr |
| B. | 20 yr |
| C. | 58 yr |
| D. | 16 yr |
| Answer» B. 20 yr | |
| 346. |
In a class, there are 80 students and their average marks in the annual examination are 40. If the average marks of passed students are 60 and average marks of failed students are 35, then find out the number of students who failed. |
| A. | 63 |
| B. | 60 |
| C. | 72 |
| D. | 64 |
| Answer» E. | |
| 347. |
The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th person is |
| A. | 128.75 kg |
| B. | 128 kg |
| C. | 131 kg |
| D. | 97.45 kg |
| Answer» D. 97.45 kg | |
| 348. |
The average of x numbers is y and average of y numbers is x. Then the average of all the numbers taken together is |
| A. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">x + y</td></tr><tr><td style="text-align: center;">2xy</td></tr></table> |
| B. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">2xy</td></tr><tr><td style="text-align: center;">x + y</td></tr></table> |
| C. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">x<sup>2</sup> + y<sup>2</sup></td></tr><tr><td style="text-align: center;">x + y</td></tr></table> |
| D. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>xy</center></td></tr><tr><td style="text-align: center;">x + y</td></tr></table> |
| Answer» C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">x<sup>2</sup> + y<sup>2</sup></td></tr><tr><td style="text-align: center;">x + y</td></tr></table> | |
| 349. |
12 kg of rice costing 30 per kg is mixed with 8 kg of rice costing 40 per kg.The average per kg price of mixed rice is |
| A. | 38 |
| B. | 37 |
| C. | 35 |
| D. | 34 |
| Answer» E. | |
| 350. |
The average marks of 100 students were found to be 40. Later on it was discovered that a score of 53 was misread as 83. Find the correct average corresponding to the correct score |
| A. | 38.7 |
| B. | 39 |
| C. | 39.7 |
| D. | 41 |
| Answer» D. 41 | |