A 4 digit no may consist of the digits 6,2,7,5 where none of the nos are repeated.Find the possible no of combinations divisible by 36?

A 4 digit no may consist of the digits 6,2,7,5 where 
none of the nos are repeated.Find the possible no of 
combinations divisible by 36?

Ques:- A 4 digit no may consist of the digits 6,2,7,5 where none of the nos are repeated.Find the possible no of combinations divisible by 36?
2 3708

2 Answers on this Question

  1. the 4 digit numbers that will be formed from ( 6,2,7,5)with
    no repetition, can not divisible by 36.
    because these no. must be divisible by 6.
    A no. will be divisible by 6 when it is also divisible by 2
    and 3.
    so some of these formed no. divisible by 2 ( eg.7562,5726
    etc) but not divisible by 3
    becase ( 7+5+6+2)=20 { according to divisibility check}
    which is not multiple of 3.

  2. no combinations is there because a number divisible by 36
    also divisible by its divisors anu.sum of 4 digits=20,whis
    is not multiple of 3.so it is cannot divisible by 3

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