Multiple choice general knowledge

47*43 equals

  1. 1921

  2. 2021

  3. 1621

  4. 1821
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

47 * 43 = 2021. Use the identity (a+b)(a-b) = a^2 - b^2 with 45 as the base: (45+2)(45-2) = 2025 - 4 = 2021.

Keep practicing — related questions