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  • The sum of the first 100 numbers, 1 to 100 is divisible by
Multiple choice general knowledge math & puzzles

The sum of the first 100 numbers, 1 to 100 is divisible by

  1. 2, 4 and 8

  2. 2 only

  3. 2 and 4

  4. None of these

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

Sum of 1 to 100 = 100×101/2 = 5050. 5050 is even, so divisible by 2. 5050/4 = 1262.5 (not integer). 5050/8 = 631.25 (not integer). Therefore 5050 is divisible by 2 only, not by 4 or 8.

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