Find the number of squares in the following figure.

ROW = 04 , COLUMN = 04

Row is equal to Column

The logic followed here is;

Row's highest number is 04

Column's highest number is 04 

So, 04x04= 16                     (multiply until Row or Column becomes zero)

03x03= 09

02x02= 04

01x01= 01

0x0= 0

Therefore, 16+09+04+01+0= 30 number of squares