Question

Which greatest digit should replace m so that the number 10m6415 is divisible by 11

Answer 1

Explanation:

Sum of digits of rank even - sum of digits of rank odd must be a multiple of 11

(5+4+m+1)-(1+6+0)=11*k

10+m-7=11*k

3+m=11*k

m=8

Proof: 1086415/11=98765

Answer 2

The answer is to ur question is 8