Question

In the following no.s replace * by a digit to make the number divisible by 11. 5*9397

Answer 1

5*9397
654321
Addition of odd no.s
7+3+*=10+*
Addition of even no.s
9+9+5=23

Diff. = 10+*-23
= 3+*
=3+8=11=11x1