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Mathematics Activity :
Composite Numbers and Prime Numbers

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

19


1.

How many prime numbers are there between 50 and 100?
 

2.

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

3.

How many pairs of prime numbers are there to express 24 as the sum of two prime numbers?
 

4.

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

5.

Two prime numbers whose difference is 2 are called twin prime numbers, e.g., 3 and 5. How many twin prime numbers are there upto 50?
 

6.

11 is a prime factor of 187. What is the other prime factor?
 

7.

How many even prime numbers between 1 and 50?
 


 
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