can anybody explain this

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Comments (3)

A
adiitya
3mos

One number from a, a+2 and a+4 must be a multiple of 3. The only multiple of 3 which is a prime number is 3 itself, so one of them is 3. There is only one such triplet which satisfies the condition (3, 5 and 7).

2
I
ipmpro
4mos

Is the answer 2?

1

No 1

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