A. 35
B. 37
C. 42
D. 30
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Problems on L.C.M and H.C.F
Find the size of the largest square slabs which can be paved on the floor of a room 5 meters 44 cm long and 3 meters 74 cm broad?
A. 56
B. 42
C. 38
D. 34
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Find the H.C.F of 12, 16, 18 and 24?
A. 1
B. 2
C. 3
D. 4
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?
A. 5
B. 7
C. 11
D. 13
Find the least multiple of 13 which when divided by 6, 8 and 12 leaves 5, 7 and 11 as remainders respectively? A. 143 B. 169 C. 260 D. 221
A. 143
B. 169
C. 260
D. 221
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?
A. 5 min
B. 5.5 min
C. 5.2 min
D. None
Find the smallest number which when increased by 5, divisible by 6, 9, 15, 20 and 24?
A. 344
B. 355
C. 366
D. 377
Find the lowest 4-digit number which when divided by 3, 4 or 5 leaves a remainder of 2 in each case?
A. 1020
B. 1026
C. 1030
D. 1022
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The H.C.F of two numbers is 11 and their L.C.M is 7700. If one of the numbers is 275, then the other is__________?
A. 279
B. 283
C. 308
D. 318
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Find the least number which when divided by 6, 7, 8, 9 and 10 leaves 1, 2, 3, 4 and 5 as remainders respectively, but when divided by 19 leaves no remainder?
A. 5073
B. 5016
C. 5054
D. 5035
