Using the prime factorisation is 400 a perfect square – InterviewSolution

1.	Using the prime factorisation is 400 a perfect square
Answer» The prime factors have EVEN powers hence 400 is a PERFECT SQUARE. One of the prime factors (3) has an odd power hence 768 is not a perfect square. SINCE the powers of the prime factors are even then 1296 is a perfect square. Since one of its prime factors has an odd power then 8000 is not a perfect square.

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