Video explanation to an all time classic permutation combination question.

Question

How many squares are there in a chess board?

A. 64

B. 65

C. 4096

D. 1296

E. 204

Ace the GRE with Wizako’s GRE classes at Chennai, India. Visit for batch details.

More practice questions with video explanation for GRE Permutation Combination and Probability @

(8+7+6+5+4+3+2+1) ^2=1296

9c2*9c2 rectangles are there