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Prime and Composite Numbers

Find the prim...

Question

Find the prime numbers from the given options.
This question can have more than one correct answer.

A

13

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B

9

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C

1

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D

11

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Solution

The correct options are
A
13

D
11

The prime numbers in the given list are 13 and 11 as they have only two factors each.
11 = 1 and 11
13 = 1 and 13

But, 9 is not a prime number since it has three factors 1, 3 and 9
Also, 1 is not a prime numer since it has only one factor 1.

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Prime and Composite Numbers

Standard IV Mathematics

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