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Mathematics Activity :
 Composite Numbers and Prime Numbers

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

57


1.

 How many prime numbers are there from 30 to 50?
 

2.

 7 is a prime factor of 133. What is the other prime factor?
 

3.

 How many composite numbers are there from 61 to 79?
 

4.

 What is the smallest composite number?
 

5.

 Which is the prime number between 90 and 100?
 

6.

 How many even prime numbers between 1 and 50?
 

7.

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


 
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Even and Odd Numbers