Question

Find the number of 4 digited numbers that can be formed using the digits 1,2,5,6,7 How many
of them are divisible by (i) 2 (ii) 3 (iii) 4 (iv) 5 (v) 25

this question is from the chapter permutations and combinations ​

Answer 1

Step-by-step explanation:

Since there is no restriction on repetition of digits, each one of the hundred's, ten's and unit's digits can be filled in 6 ways. Hence, the required number of numbers=(6×6×6)=216