250 is not a perfect square. We know 15² = 225 and 16² = 256, so √250 lies between 15 and 16. Since 250 is closer to 256, the approximate square root of 250 is slightly less than 16. Class 8 ...
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Yes, 3375 is a perfect cube. Its prime factorisation is 3 × 3 × 3 × 5 × 5 × 5. These group as (3 × 5)³ = 15³. So, 3375 is a cube and its cube root is 15. Class ...
The locker numbers that remain open are the ones which are perfect squares: 1, 4, 9, 16, 25, 36, 49, 64, 81 and 100. These numbers have an odd number of factors and remain open after all toggling. Class 8 Mathematics ...