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Problems on L.C.M and H.C.F

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

Mathematics Mcqs, Problems on L.C.M and H.C.F /
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
Explanation:
LCM = 10080
10080) 99999 (8
90720
———
9279
99999 – 9279 = 90720

The greatest number of five digits which is divisible by 32, 36, 40, 42 and 48 is_________? Read More »

Mathematics Mcqs, Problems on L.C.M and H.C.F

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?

Mathematics Mcqs, Problems on L.C.M and H.C.F /
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

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? Read More »

Mathematics Mcqs, Problems on L.C.M and H.C.F