MCQOPTIONS
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MCQOPTIONS
This section includes 175 Mcqs, each offering curated multiple-choice questions to sharpen your Discrete Mathematics knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
35 + 15 x 1.5 = ? |
| A. | 85 |
| B. | 51.5 |
| C. | 57.5 |
| D. | 5.25 |
| Answer» D. 5.25 | |
| 52. |
What is the sum of two consecutive even numbers, the difference of whose squares is 84? |
| A. | 34 |
| B. | 38 |
| C. | 42 |
| D. | 46 |
| Answer» D. 46 | |
| 53. |
217 x 217 + 183 x 183 = ? |
| A. | 79698 |
| B. | 80578 |
| C. | 80698 |
| D. | 81268 |
| Answer» C. 80698 | |
| 54. |
A number when divide by 6 leaves a remainder 3. When the square of the number is divided by 6, the remainder is: |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 55. |
The least perfect square, which is divisible by each of 21, 36 and 66 is: |
| A. | 213444 |
| B. | 214344 |
| C. | 214434 |
| D. | 231444 |
| Answer» B. 214344 | |
| 56. |
8796 x 223 + 8796 x 77 = ? |
| A. | 2736900 |
| B. | 2638800 |
| C. | 2658560 |
| D. | 2716740 |
| Answer» C. 2658560 | |
| 57. |
How many prime numbers are less than 50 ? |
| A. | 16 |
| B. | 15 |
| C. | 14 |
| D. | 18 |
| Answer» C. 14 | |
| 58. |
(35423 + 7164 + 41720) - (317 x 89) = ? |
| A. | 28213 |
| B. | 84307 |
| C. | 50694 |
| D. | 56094 |
| Answer» E. | |
| 59. |
Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is: |
| A. | 9 |
| B. | 11 |
| C. | 13 |
| D. | 15 |
| Answer» E. | |
| 60. |
A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. The number is: |
| A. | 145 |
| B. | 253 |
| C. | 370 |
| D. | 352 |
| Answer» C. 370 | |
| 61. |
Find the odd man out:835, 734, 642, 751, 853, 981, 532 |
| A. | 751 |
| B. | 853 |
| C. | 981 |
| D. | 532 |
| Answer» B. 853 | |
| 62. |
If 60% of 3/5 of a number is 36, then the number is: |
| A. | 80 |
| B. | 100 |
| C. | 75 |
| D. | 90 |
| Answer» C. 75 | |
| 63. |
(4300731) - ? = 2535618 |
| A. | 1865113 |
| B. | 1775123 |
| C. | 1765113 |
| D. | 1675123 |
| Answer» D. 1675123 | |
| 64. |
8988 ÷ 8 ÷ 4 = ? |
| A. | 4494 |
| B. | 561.75 |
| C. | 2247 |
| D. | 280.875 |
| Answer» E. | |
| 65. |
The square root of (7 + 3√5) (7 - 3√5) is |
| A. | √5 |
| B. | 2 |
| C. | 4 |
| D. | 3√5 |
| Answer» C. 4 | |
| 66. |
476 ** 0 is divisible by both 3 and 11. The non-zero digits in the hundred's and ten's places are respectively: |
| A. | 7 and 4 |
| B. | 7 and 5 |
| C. | 8 and 5 |
| D. | None of these |
| Answer» D. None of these | |
| 67. |
What least number must be subtracted from 13601, so that the remainder is divisible by 87 ? |
| A. | 23 |
| B. | 31 |
| C. | 29 |
| D. | 37 |
| Answer» D. 37 | |
| 68. |
If the number 97215 * 6 is completely divisible by 11, then the smallest whole number in place of * will be: |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 5 |
| Answer» B. 2 | |
| 69. |
What smallest number should be added to 4456 so that the sum is completely divisible by 6 ? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» D. 1 | |
| 70. |
4500 x ? = 3375 |
| A. | 25 |
| B. | 34 |
| C. | 14 |
| D. | 35 |
| Answer» C. 14 | |
| 71. |
In dividing a number by 585, a student employed the method of short division. He divided the number successively by 5, 9 and 13 (factors 585) and got the remainders 4, 8, 12 respectively. If he had divided the number by 585, the remainder would have been |
| A. | 24 |
| B. | 144 |
| C. | 292 |
| D. | 584 |
| Answer» E. | |
| 72. |
A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be: |
| A. | 1 |
| B. | 2 |
| C. | 8 |
| D. | 11 |
| Answer» B. 2 | |
| 73. |
How many natural numbers are there between 23 and 100 which are exactly divisible by 6 ? |
| A. | 8 |
| B. | 11 |
| C. | 12 |
| D. | 13 |
| Answer» E. | |
| 74. |
On dividing a number by 5, we get 3 as remainder. What will the remainder when the square of the this number is divided by 5 ? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 4 |
| Answer» E. | |
| 75. |
If n is a natural number, then (6n^2 + 6n) is always divisible by: |
| A. | 6 only |
| B. | 6 and 12 both |
| C. | 12 only |
| D. | by 18 only |
| Answer» C. 12 only | |
| 76. |
What will be remainder when (67^67 + 67) is divided by 68 ? |
| A. | 1 |
| B. | 63 |
| C. | 66 |
| D. | 67 |
| Answer» D. 67 | |
| 77. |
(753 x 753 + 247 x 247 - 753 x 247)/ (753 x 753 x 753 + 247 x 247 x 247) = ? |
| A. | 1/1000 |
| B. | 1/506 |
| C. | 253/500 |
| D. | None of these |
| Answer» B. 1/506 | |
| 78. |
The difference between the local value and the face value of 7 in the numeral 32675149 is |
| A. | 75142 |
| B. | 64851 |
| C. | 5149 |
| D. | 69993 |
| Answer» E. | |
| 79. |
Which one of the following numbers is exactly divisible by 11? |
| A. | 235641 |
| B. | 245642 |
| C. | 315624 |
| D. | 415624 |
| Answer» E. | |
| 80. |
If the number 517*324 is completely divisible by 3, then the smallest whole number in the place of * will be: |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | None of these |
| Answer» D. None of these | |
| 81. |
The sum of first five prime numbers is: |
| A. | 11 |
| B. | 18 |
| C. | 26 |
| D. | 28 |
| Answer» E. | |
| 82. |
5358 x 51 = ? |
| A. | 273258 |
| B. | 273268 |
| C. | 273348 |
| D. | 273358 |
| Answer» B. 273268 | |
| 83. |
72519 x 9999 = ? |
| A. | 725117481 |
| B. | 674217481 |
| C. | 685126481 |
| D. | 696217481 |
| Answer» B. 674217481 | |
| 84. |
(12)^3 x 6^4 ÷ 432 = ? |
| A. | 5184 |
| B. | 5060 |
| C. | 5148 |
| D. | 5084 |
| Answer» B. 5060 | |
| 85. |
The square root of 64009 is: |
| A. | 253 |
| B. | 347 |
| C. | 363 |
| D. | 803 |
| Answer» B. 347 | |
| 86. |
What is the unit digit in {(6374)^1793 x (625)^317 x (341)^491)}? |
| A. | 0 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» B. 2 | |
| 87. |
Find the odd man out:10, 25, 45, 54, 60, 75, 80 |
| A. | 10 |
| B. | 45 |
| C. | 54 |
| D. | 75 |
| Answer» D. 75 | |
| 88. |
How many of the following numbers are divisible by 132 ?264, 396, 462, 792, 968, 2178, 5184, 6336 |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» B. 5 | |
| 89. |
The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder. What is the smaller number ? |
| A. | 240 |
| B. | 270 |
| C. | 295 |
| D. | 360 |
| Answer» C. 295 | |
| 90. |
Find the odd man out:1, 4, 9, 16, 23, 25, 36 |
| A. | 9 |
| B. | 23 |
| C. | 25 |
| D. | 36 |
| Answer» C. 25 | |
| 91. |
(?) + 3699 + 1985 - 2047 = 31111 |
| A. | 34748 |
| B. | 27474 |
| C. | 30154 |
| D. | 27574 |
| Answer» C. 30154 | |
| 92. |
Find the odd man out:8, 27, 64, 100, 125, 216, 343 |
| A. | 27 |
| B. | 100 |
| C. | 125 |
| D. | 343 |
| Answer» C. 125 | |
| 93. |
How many 3-digit numbers are completely divisible 6 ? |
| A. | 149 |
| B. | 150 |
| C. | 151 |
| D. | 166 |
| Answer» C. 151 | |
| 94. |
A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 9 are wrong and the other digits are correct, then the correct answer would be: |
| A. | 553681 |
| B. | 555181 |
| C. | 555681 |
| D. | 556581 |
| Answer» D. 556581 | |
| 95. |
On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: |
| A. | 47619 |
| B. | 47719 |
| C. | 48619 |
| D. | 47649 |
| Answer» B. 47719 | |
| 96. |
Which of the following is a prime number ? |
| A. | 33 |
| B. | 81 |
| C. | 93 |
| D. | 97 |
| Answer» E. | |
| 97. |
If 3√5 + √125 = 17.88, then what will be the value of √80 + 6√5 ? |
| A. | 13.41 |
| B. | 20.46 |
| C. | 21.66 |
| D. | 22.35 |
| Answer» E. | |
| 98. |
The smallest 3 digit prime number is: |
| A. | 101 |
| B. | 103 |
| C. | 109 |
| D. | 113 |
| Answer» B. 103 | |
| 99. |
3 + 33 + 333 + 3.33 = ? |
| A. | 362.3 |
| B. | 372.33 |
| C. | 702.33 |
| D. | 702 |
| Answer» C. 702.33 | |
| 100. |
The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller, is 15. The sum of the numbers is: |
| A. | 380 |
| B. | 395 |
| C. | 400 |
| D. | 425 |
| Answer» D. 425 | |