The least square number which divides 8, 12 and 18 is __?
A. 100
B. 121
C. 64
D. 144
The least number which when divided by 8, 12 and 16, leave in each remainder 3, is __?
A. 71
B. 70
C. 69
D. 51
The least number which when add 3 to it, completely divided 8, 12 and 18 is ___?
A. 71
B. 70
C. 69
D. 68
The least number which when diminished by 7 is divisible by 21, 28, 36 and 45 is ____?
A. 1267
B. 1265
C. 1261
D. 68
Four bells begin to toll together respectively at the intervals of 8, 10, 12 and 16 seconds. After how many seconds will they toll together again?
A. 246 seconds
B. 242 seconds
C. 240 seconds
D. 243 seconds
The product of two digits number is 2160 and their HCF is 12. The numbers are _____?
A. (36,60)
B. (12,180)
C. (96,25)
D. (72,30)
The greatest number of five digits which is divisible by 32, 36, 40, 42 and 48 is _______?
A. 90730
B. 90725
C. 90715
D. 90720
The least number of four digits which is divisible by 4, 6, 8 and 10 is ______?
A. 1080
B. 1085
C. 1075
D. 1095
The greatest number of four digits that have 144 for their HCF is _______?
A. 9930
B. 9903
C. 9935
D. 9936
The least number of five digits that have 144 their HCF is ____?
A. 10085
B. 10080
C. 10075
D. 10070
