**Problem of the week**** **

In how many ways can one
put numbers 1

through 9 in a 3-by-3 square in
such a way that numbers in every row are

increasing (from left to right) and
numbers in every column are increasing

(from top to bottom).

Send your solution by 23 Apr 2017 on
pow@madanpur.in

Correct solution
received from:

1.

2.

3.