problems on l c m and h c f MCQs – Page 4

Practise focused problems on l c m and h c f questions with marked answers for exam preparation and subject revision.

problems on l c m and h c f Mcqs

61. Five bells first begin to toll together and then at intervals of 5, 10, 15, 20 and 25 seconds respectively. After what interval of time will they toll again together?
0

A. None

B. 5 min

C. 5.2 min

D. 5.5 min

62. Product of two co-prime numbers is 117. Their L.C.M should be__________?
0

A. equal to their H.C.F

B. 117

C. Cannot be calculated

D. 1

63. The product of two numbers is 4107. If the H.C.F of these numbers is 37, then the greater number is_________?
0

A. 107

B. 101

C. 185

D. 111

64. 1095/1168 when expressed in simplest form is:
0

A. 15/16

B. 25/26

C. 17/26

D. 13/16

65. Find the least number of five digits which is exactly divisible by 12, 15 and 18?
0

A. 10025

B. 1080

C. 10080

D. 11080

66. The G.C.D of 1.08, 0.36 and 0.9 is________?
0

A. 0.9

B. 0.108

C. 0.03

D. 0.18

67. Two numbers 4242 and 2903 when divided by a certain number of three digits, leave the same remainder. Find the number?
0

A. 101

B. 107

C. 103

D. 113

68. LCM of two numbers is 138. But their (Greatest common divisor) GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?
0

A. 46

B. 138

C. 23

D. 69

69. The product of two numbers is 2025 and their HCF is 15 their LCM is____________?
0

A. 2040

B. 2010

C. 150

D. 135

70. The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is___________?
0

A. 995

B. 893

C. 982

D. 1024

71. The sum of two numbers is 528 and their H.C.F is 33. The number of pairs of numbers satisfying the above conditions is__________?
0

A. 6

B. 12

C. 4

D. 8

72. A gardener was asked a plant flowers in a row containing equal number of plants. He tried to plant 6, 8, 10 and 12 in each row, but 5 plants left in each case. When he planted 13 in a row, no plant was left. Find the number of plants with him?
0

A. 485

B. 245

C. 125

D. 845

73. The greatest number of five digits which is divisible by 32, 36, 40, 42 and 48 is_________?
0

A. 90730

B. 90715

C. 90725

D. 90720

74. A wholesale tea dealer 408 kilograms, 468 kilograms and 516 kilograms of three different qualities of tea. He wants it all to be packed into boxes of equal size without mixing. Find the capacity of the largest possible box?
0

A. 12

B. 50

C. 24

D. 36

75. Find the H.C.F of 204, 1190 and 1445?
0

A. 17

B. 204

C. 34

D. 85

76. A heap of stones can be made up into groups of 21. When made up into groups of 16, 20, 25 and 45 there are 3 stones left in each case. How many stones at least can there be in the heap?
0

A. 7203

B. 3603

C. 4803

D. 2403

77. A drink vendor has 80 liters of Maaza, 144 liters of Pepsi and 368 liters of Sprite. He wants to pack them in cans, so that each can contains the same number of liters of a drink, and doesnt want to mix any two drinks in a can. What is the least number of cans required?
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A. 42

B. 37

C. 35

D. 30

78. There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number?
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A. 11

B. 7

C. 5

D. 13

79. Find the lowest 4-digit number which when divided by 3, 4 or 5 leaves a remainder of 2 in each case?
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A. 1030

B. 1022

C. 1020

D. 1026

80. The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?
0

A. 2 min

B. None

C. 3 min

D. 1 min

Showing 61 to 80 of 93 mcqs