Question

The number of all four digit numbers which are divisible by 4 that can be formed from the digits 1, 2, 3, 4 and 5, is
(a). 125
(b). 30
(c). 95
(d). none of these​

Answer 1

First of in these kind of questions we generally use permutations and combinations so the first three digits of a number we can choose any one of the five but the last digit must be 4 only for it to be divisible by 4 thus the total numbers divisible by four are 5*5*5*1=125