m4maths Maths Puzzle

pls anyone send the patern of question of exl infotel particularly for ece

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m4maths Other Question

9, 16, 24, 25,

Options
1) 14
2) 21
3) 32
4) 36
5) 50
6) 12
7) 28
8) 20
9) 22
10) none of these calculate the total no of squares of any size on a chess board