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Prime and Composite Numbers

How many comp...

Question

How many composite numbers exist from 1 to 10?

A

6

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B

5

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C

4

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D

3

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Solution

The correct option is B 5
A number is called a composite number if it has at least one factor other than 1 and number
itself.

From 1 to 10, there are five composite numbers namely 4, 6, 8, 9 and 10.
1 is neither a prime number nor a composite number.

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