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Which is the smallest natural number having exactly 10 factors?

Competition practiceNumber System, HCF & LCM

A48
B36
C60
D72

Step-by-Step Solution

10 factors means the form

p^{9}

or

p^{4} q

. Smallest:

2^{4} \times 3 = 48 (2^{9} = 512

is bigger).

Answer: A) 48

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