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Mathematics Activity :
Composite Numbers and Prime Numbers

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How many prime numbers are there from 30 to 50?

5


1.

How many prime numbers are there between 1 and 10?
 

2.

What is the sum of the prime numbers coming immediately before and after 71?
 

3.

Which is the prime number between 90 and 100?
 

4.

How many pairs of prime numbers are there to express 18 as the sum of two prime numbers?
 

5.

What is the difference between the greatest and the smallest prime numbers coming in between 20 and 40?
 

6.

What is the sum of the prime numbers between 20 and 30?
 

7.

Which of the following is a composite number: 37, 47, 57, 67?
 


 
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