Multiple choice general knowledge math & puzzles

find the sum of numbers which are perfect squares as well as perfect cubes and are less than 1000

  1. 23457

  2. 1346

  3. 65

  4. 794

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

A number that is both a perfect square and perfect cube must be a perfect 6th power (LCM of 2 and 3 is 6). The 6th powers less than 1000 are: 1^6 = 1, 2^6 = 64, 3^6 = 729. Sum = 1 + 64 + 729 = 794. Option D is correct.