Iam an even multiple of 2,if you reverse my digits ,I become a multiple of 9.who am I?

Answer 1

By an even multiple of 2, do you mean a multiple of 4? As in 6 is an odd (3) multiple of 2, but 24 is an even (12) multiple of 2?

In any case, just pick any multiple of 2 or 4, as required, whose digits sum to 9.

Such as 72, 234, 69732, etc.

Read about "casting out nines".

Answer 2

18