Question

A number lies between 2000 and 2017 and has 5 in at one place is its one place is it a prime or composite number give reason

Answer 1

is composite only, between 2000 & 2017 '20' is fixed. now between 00 & 17 there are two nos. '05' & '15' which contain 5 at one place. in both cases '2005' & '2015' it is divisible by 5.

Answer 2

I think some mistakes in your question

2070 is replaced by 2017

according to my logic..

2005, 2015, 2025, 2035, 2045, 2055, 2065 Composite Numbers(divisible by 5)

hope it will help you..