Multiple choice general knowledge foreign languages

How many Rectangles which are not squares can be formed in a 9*9 board if it is like a chess board

  1. 1536

  2. 1296

  3. 1369

  4. 1092

  5. 1740
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

In a 9x9 grid, total rectangles = (9×10/2)² = (45)² = 2025. Total squares = 9² + 8² + ... + 1² = 285. Rectangles that are NOT squares = 2025 - 285 = 1740. The claimed answer E (1740) is correct after verification.

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