Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Statement-1: Number of rectangles on chessboard (which may be overlapped also) is ${ }^8 C _2 \cdot{ }^8 C _2$.
Statement-2: To form a rectangle we have to select any two of the horizontal lines and any two from the vertical lines.

Permutations and Combinations

Solution:

it should be ${ }^9 C _2 \cdot{ }^9 C _2$