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Prime Factorization

Help Tobby un...

Question

Help Tobby unlock the lock by choosing the key with a prime factor of 113 written on it.

A

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B

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C

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D

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Solution

The correct option is A
The factor tree of 113 is:

Thus, 113 is a prime number and its prime factors are 1 and 113.

Hence, Tobby should choose the key with 113 written on it.

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