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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.
| 251. |
If out of 10 selected students for an examination, 3 were of 20 years, age, 4 of 21 and 3 of 22 years, the average age of the group is |
| A. | 22 years |
| B. | 21 years |
| C. | 21.5 years |
| D. | 20 years |
| Answer» C. 21.5 years | |
| 252. |
The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and that of the last five is 10 years. The teacher s age is |
| A. | 36 years |
| B. | 34 years |
| C. | 30 years |
| D. | 28 years |
| Answer» C. 30 years | |
| 253. |
The average age of 11 players of a cricket team is increased by 2 months when two of them aged 18 years and 20 years are replaced by two new players. The average age of the new players is |
| A. | 19 years 1 month |
| B. | 19 years 6 months |
| C. | 19 years 11 months |
| D. | 19 years 5 months |
| Answer» D. 19 years 5 months | |
| 254. |
The average age of group of 20 girls is 15 years and that of another group of 25 boys it is 24 years. The average age of the two groups mixed together is |
| A. | 19.5 years |
| B. | 20 years |
| C. | 21 years |
| D. | 21.5 years |
| Answer» C. 21 years | |
| 255. |
The average age of 40 students of a class is 18 years. When 20 new students are admitted to the same class, the average age of the students of the class is increased by 6 months. The average age of newly admitted student is |
| A. | 19 years |
| B. | 19 years 6 months |
| C. | 20 years |
| D. | 20 years 6 months |
| Answer» C. 20 years | |
| 256. |
The average of five numbers is 7. If three new numbers would be added, then the new average comes out to be 8.5. What is the average of those three new numbers? |
| A. | 9 |
| B. | 10.5 |
| C. | 11 |
| D. | 11.5 |
| Answer» D. 11.5 | |
| 257. |
A student finds the average of 10, two digit numbers. If the digits of one of the numbers is interchanged, the average increases by 3.6. The difference between the digits of the 2-digit numbers is |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 258. |
The average weight of 40 children of a class is 36.2 kg. When three more children with weight 42.3 kg, 39.7 kg and 39.5 kg join the class, the average weight of the 43 children in the class is |
| A. | 39.2 kg |
| B. | 36.5 kg |
| C. | 38.35 kg |
| D. | 37.3 kg |
| Answer» C. 38.35 kg | |
| 259. |
The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misread as 34. It was also found that the number of items were 90 and not 100. Then what is the correct mean ? |
| A. | 50 |
| B. | 50.7 |
| C. | 52 |
| D. | 52.7 |
| Answer» C. 52 | |
| 260. |
The average of 27 numbers is 60. If one number is changed from 28 to 82, the average is |
| A. | 56 |
| B. | 58 |
| C. | 62 |
| D. | 64 |
| Answer» D. 64 | |
| 261. |
A student finds the average of ten 2-digit numbers. While copying numbers, by mistake, he writes one number with its digits interchanged. As a result his answer is 1.8 less than the correct answer. The difference of the digits of the number, in which he made mistake, is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» B. 3 | |
| 262. |
The average of 100 items was found to be 30. If at the time of calculation, two items were wrongly taken as 32 and 12 instead of 23 and 11, then the correct average is : |
| A. | 29.8 |
| B. | 29 |
| C. | 29.9 |
| D. | 29.5 |
| Answer» D. 29.5 | |
| 263. |
The average marks secured by 36 students was 52. But it was discovered that an item 64 was misread as 46. What is the correct mean of marks ? |
| A. | 54 |
| B. | 53.5 |
| C. | 53 |
| D. | 52.5 |
| Answer» E. | |
| 264. |
The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is |
| A. | 37.5 |
| B. | 37.9 |
| C. | 36.5 |
| D. | 37.0 |
| Answer» B. 37.9 | |
| 265. |
The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is |
| A. | 65.1 |
| B. | 65.3 |
| C. | 56.9 |
| D. | 56 |
| Answer» D. 56 | |
| 266. |
The average weight of the 8 oarsmen in boat is increased by 1 |
| A. | 70 kg |
| B. | 68 kg |
| C. | 71 kg |
| D. | 72 kg |
| Answer» E. | |
| 267. |
The average of marks of 14 student was calculated as 71. But it was later found that the marks of one student had been wrongly entered as 42 instead of 56 and of another as 74 instead of 32. The correct average is : |
| A. | 67 |
| B. | 68 |
| C. | 69 |
| D. | 71 |
| Answer» D. 71 | |
| 268. |
If the arithmetic mean of 3a and 4b is greater than 50, and a is twice b, then the smallest possible integer value of a is |
| A. | 20 |
| B. | 18 |
| C. | 21 |
| D. | 19 |
| Answer» D. 19 | |
| 269. |
The average of first three numbers is double of the fourth number. If the average of all the four numbers is 12, find the 4th number. |
| A. | 16 |
| B. | 48/7 |
| C. | 20 |
| D. | 18/7 |
| Answer» C. 20 | |
| 270. |
The average of 6 consecutive natural numbers is K. If the next two natural numbers are also included, how much more than K will the average of these 8 numbers be? |
| A. | 1.3 |
| B. | 1 |
| C. | 2 |
| D. | 1.8 |
| Answer» C. 2 | |
| 271. |
If the average of eight consecutive even numbers be 93, then the greatest number among them is |
| A. | 100 |
| B. | 86 |
| C. | 102 |
| D. | 98 |
| Answer» B. 86 | |
| 272. |
The average of first ten prime numbers is |
| A. | 10.1 |
| B. | 10 |
| C. | 12.9 |
| D. | 13 |
| Answer» D. 13 | |
| 273. |
What is the average of the first six (positive) odd numbers each of which is divisible by 7? |
| A. | 42 |
| B. | 43 |
| C. | 47 |
| D. | 49 |
| Answer» B. 43 | |
| 274. |
Average of first five prime numbers is |
| A. | 5.3 |
| B. | 5.6 |
| C. | 5 |
| D. | 3.6 |
| Answer» C. 5 | |
| 275. |
a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is |
| A. | <table><tr><td rowspan="2">3</td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-oparen-h1.gif"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a + n</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cparen-h1.gif"></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| B. | <table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-oparen-h1.gif"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>l + d</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cparen-h1.gif"></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| C. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a + b + m + n</center></td></tr><tr><td style="text-align: center;">4</td></tr></table> |
| D. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>j + c + n + g</center></td></tr><tr><td style="text-align: center;">4</td></tr></table> |
| Answer» C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>a + b + m + n</center></td></tr><tr><td style="text-align: center;">4</td></tr></table> | |
| 276. |
The average of 5 consecutive integers starting with m is n. What is the average of 6 consecutive integers starting with (m + 2) ? |
| A. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2n + 5</center></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| B. | (n +2) |
| C. | (n + 3) |
| D. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2n + 9</center></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| Answer» B. (n +2) | |
| 277. |
The average of seven consecutive positive integers is 26. The smallest of these integers is : |
| A. | 21 |
| B. | 23 |
| C. | 25 |
| D. | 26 |
| Answer» C. 25 | |
| 278. |
If the average weight of 6 students is 50 kg; that of 2 students is 51 kg; and that of other 2 students is 55 kg; then the average weight of all students is |
| A. | 61 kg |
| B. | 51.5 kg |
| C. | 52 kg |
| D. | 51.2 kg |
| Answer» E. | |
| 279. |
The average of 30 results is 20 and the average of other 20 results is 30. What is the average of all the results ? |
| A. | 24 |
| B. | 48 |
| C. | 25 |
| D. | 50 |
| Answer» B. 48 | |
| 280. |
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is |
| A. | 54.68 |
| B. | 53.33 |
| C. | 55 |
| D. | None of these |
| Answer» B. 53.33 | |
| 281. |
The average of the marks obtained in an examination by 8 students was 51 and by 9 other students was 68. The average marks of all 17 students was : |
| A. | 59 |
| B. | 59.5 |
| C. | 60 |
| D. | 60.5 |
| Answer» D. 60.5 | |
| 282. |
If average of 20 observations x |
| A. | y 20 |
| B. | y 101 |
| C. | 20y |
| D. | 101y |
| Answer» C. 20y | |
| 283. |
Total weekly emoluments of the workers of a factory is 1534. Average weekly emolument of a worker is 118. The number of workers in the factory is : |
| A. | 16 |
| B. | 14 |
| C. | 13 |
| D. | 12 |
| Answer» D. 12 | |
| 284. |
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 |
| C. | <table><tr><td rowspan="2">46</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">1</td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| D. | <table><tr><td rowspan="2">45</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">1</td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| Answer» C. <table><tr><td rowspan="2">46</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">1</td></tr><tr><td style="text-align: center;">2</td></tr></table> | |
| 285. |
The average income of 40 persons is 4200 and that of another 35 persons is 4000. The average income of the whole group is : |
| A. | 4100 |
| B. | <table><tr><td rowspan="2"> 4106</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">1</td></tr><tr><td style="text-align: center;">3</td></tr></table> |
| C. | <table><tr><td rowspan="2"> 4106</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">2</td></tr><tr><td style="text-align: center;">3</td></tr></table> |
| D. | |
| E. | <table><tr><td rowspan="2"> 4108</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;">1</td></tr><tr><td style="text-align: center;">3</td></tr></table> |
| Answer» D. | |
| 286. |
Find the average of 1.11, 0.01, 0.101, 0.001, 0.11 |
| A. | 0.2664 |
| B. | 0.2554 |
| C. | 0.1264 |
| D. | 0.1164 |
| Answer» B. 0.2554 | |
| 287. |
The average monthly expenditure of a family is 2,200 during first three months, 2,550 dur-ing next four months and 3,120 during last five months of the year. If the total savings during the year was 1,260, what is the average monthly income ? |
| A. | 1,260 |
| B. | 1,280 |
| C. | 2,805 |
| D. | 2,850 |
| Answer» D. 2,850 | |
| 288. |
The average of 30 numbers is 15. The average of the first 18 numbers is 10 and that of the next 11 numbers is 20. The last number is |
| A. | 56 |
| B. | 52 |
| C. | 60 |
| D. | 50 |
| Answer» E. | |
| 289. |
The mean of 9 observations is 16. One more observation is included and the new mean becomes 17. The 10th observation is |
| A. | 9 |
| B. | 16 |
| C. | 26 |
| D. | 30 |
| Answer» D. 30 | |
| 290. |
Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of them is |
| A. | 1 m 12.1 cm |
| B. | 1 m 21.1 cm |
| C. | 1 m 21 cm |
| D. | 1 m 12 cm |
| Answer» B. 1 m 21.1 cm | |
| 291. |
The mean high temperature of the first four days of a week is 25 C whereas the mean of the last four days is 25.5 C. If the mean temperature of the whole week is 25.2 C then the temperature on the 4th day is |
| A. | 25.5 C |
| B. | 25 C |
| C. | 25.2 C |
| D. | 25.6 C |
| Answer» E. | |
| 292. |
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. The weight of the new person is |
| A. | 84 kg |
| B. | 85 kg |
| C. | 76 kg |
| D. | 76.5 kg |
| Answer» C. 76 kg | |
| 293. |
Six friends have an average height of 167 cms. A boy with height 162 cm leaves the group. Find the new average height. |
| A. | 168 cm |
| B. | 166 cm |
| C. | 169 cm |
| D. | 167 cm |
| Answer» B. 166 cm | |
| 294. |
The average of 1, 3, 5, 7, 9, 11, -------- to 25 terms is |
| A. | 125 |
| B. | 25 |
| C. | 625 |
| D. | 50 |
| Answer» C. 625 | |
| 295. |
The average of 25 results is 20. The average of first 12 results is 15 and that of the last 12 results is 18. Then, the 13th result is : |
| A. | 100 |
| B. | 101 |
| C. | 104 |
| D. | 103 |
| Answer» D. 103 | |
| 296. |
A librarian purchased 50 story books for his library. But he saw that he could get14 more books by spending Rs. 76 more and the average price per book would be reduced by Re. 1. The average price (in Rs.) of each book he bought, was : |
| A. | 15 |
| B. | 10 |
| C. | 25 |
| D. | 20 |
| Answer» C. 25 | |
| 297. |
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. | |
| 298. |
The average of marks obtained by 100 candidates in a certain examination is 30. If the average marks of passed candidates is 35 and that of the failed candidates is 10, what is the number of candidates who passed the examination? |
| A. | 60 |
| B. | 70 |
| C. | 80 |
| D. | 90 |
| Answer» D. 90 | |
| 299. |
The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is |
| A. | 35 |
| B. | 45 |
| C. | 55 |
| D. | 65 |
| Answer» C. 55 | |
| 300. |
The average marks of 50 students in a class is 72. The average marks of boys and girls in that subject are 70 and 75 respectively. The number of boys in the class is |
| A. | 20 |
| B. | 35 |
| C. | 25 |
| D. | 30 |
| Answer» E. | |