What is the minimum number of chocolates that must be added to an existing stock of 966 chocolates, so that the total stock can be equally distributed among 6, 7, 8 or 9 persons?
A 36
B 42
C 56
D 72
Solution
Correct Answer: Option B
prime factors of following numbers are, 6=2x3 7=1x7 8=2x2x2x2 9=3x3 so,L.C.M=2x3x3x7x4=504
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