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How many integers from 1 to 900 inclusive have exactly 3 positive divisors?

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by BTGmoderatorLU » Mon Jun 14, 2021 3:27 pm

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A

B

C

D

E

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How many integers from 1 to 900 inclusive have exactly 3 positive divisors?

A. 10
B. 14
C. 15
D. 29
E. 30

The OA is A
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