Guess this is not complete question...800guy wrote:If k=m(m+4)(m+5) k and m are positive integers. Which of the following could divide k evenly?
I.3
II.4
III.6
aren't there combinations like I only, I & II etc ??
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kulksnikhil
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aren't there combinations like I only, I & II etc ??
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800guy
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you're right, kulksnikhil. this problem wasn't given in complete form. anyway, here's the OA:
The idea is to find what are the common factors that we get in the answer.
m = 1, k = 30 which is divisible by 1,2,3,5,6,10, 15 and 30
m = 2, k = 84 which is divisible by 1,2,3,4,6, ....
As can be seen, the common factors are 1,2,3,6
So answer is 3 and 6
The idea is to find what are the common factors that we get in the answer.
m = 1, k = 30 which is divisible by 1,2,3,5,6,10, 15 and 30
m = 2, k = 84 which is divisible by 1,2,3,4,6, ....
As can be seen, the common factors are 1,2,3,6
So answer is 3 and 6