How to find that what are the prime numbers between 30 and 50?
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1
Try to factorize the numbers from 30 onwards till 50.
Since 50 is between 7² and 8², it is enough to find factors less than or equal to 7.
So check for 30, 31, 32, 33, ...., 50 : if 2,3, 5, 7 are factors of that number.
30 , 32, 34 are even numbers. So obviously they are not prime numbers.
So check for 31, 33, 35, 37, 39 ,...., 45, 47, 49 : if they have factors from 2, 3, 5, 7.
If the numbers do not have those factors, then they are prime numbers.
Answer: 31, 37, 41, 43, 47 are prime numbers.
Since 50 is between 7² and 8², it is enough to find factors less than or equal to 7.
So check for 30, 31, 32, 33, ...., 50 : if 2,3, 5, 7 are factors of that number.
30 , 32, 34 are even numbers. So obviously they are not prime numbers.
So check for 31, 33, 35, 37, 39 ,...., 45, 47, 49 : if they have factors from 2, 3, 5, 7.
If the numbers do not have those factors, then they are prime numbers.
Answer: 31, 37, 41, 43, 47 are prime numbers.
kvnmurty:
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Answered by
0
By prime table
Make elements 30 to 50
Strike multiples of 2,3,5,7,9, 11,13,15,17,19,21,23,25,29.......,and
The you will get
Prime numbers
31 37 41 43*47
Make elements 30 to 50
Strike multiples of 2,3,5,7,9, 11,13,15,17,19,21,23,25,29.......,and
The you will get
Prime numbers
31 37 41 43*47
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