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Question
The least number that must be multiplied by 72 to make it a cube number is:
The least number that must be multiplied by 72 to make it a cube number is:
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Solution
The correct option is D 3
Writing 72 as a product of prime factors, we have:
72 = 2x2x2x3x3
The prime factor 3 does not appear in a group of three.
So, the least number with which 72 must be multiplied to make it a perfect cube is 3.
3
Writing 72 as a product of prime factors, we have:
72 = 2x2x2x3x3
The prime factor 3 does not appear in a group of three.
So, the least number with which 72 must be multiplied to make it a perfect cube is 3.
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