Question

How many different rectangles are there on a chessboard?

Answer 1

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$<b>Answer</b>$

1296 rectangles

$<b>Step-by-step explanation</b>$

A rectangle is formed by choosin' two horizontal sides from 9 available and two vertical sides from 9. Each such choices creates a different rectangle.

So, we've 9C2 × 9C2

$<b>= 1296 rectangles</b>$


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