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How many even perfect square factors does 2^4*7^9 have?

 Nov 3, 2019
 #1
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Which ones have you found?

 Nov 3, 2019
 #2
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How many even perfect square factors does 2^4*7^9 have?

 

Take the exponent of each even prime factor: 2^4 =[4 / 2 + 1] = 3 - it has only 3 EVEN perfect squares as factors.

 Nov 3, 2019

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