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Multiple choice general knowledge math & puzzles

What is the smallest number that is exactly divisible by 1,2,3,4,5,6,7,8,9,10 ?

  1. 420

  2. 25200

  3. 840

  4. 2520

  5. 1680

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The smallest number divisible by all integers from 1 to 10 is the Least Common Multiple (LCM) of those numbers. LCM(1, 2, 3, 4, 5, 6, 7, 8, 9, 10) = 2^3 * 3^2 * 5 * 7 = 8 * 9 * 5 * 7 = 2520.

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