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Q.

Out of the following, choose the correct three pairs of prime numbers whose difference isQuestion Image. [Remark: Two prime numbers whose difference is Question Image are called twin primes].


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a

  Question Image

b

Question Image

c

Question Image

d

Question Image 

answer is A.

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Detailed Solution

Concept- Prime numbers have two factors, Question Image and the number itself. Twin prime is a pair of prime numbers with a difference of two. Twin primes are also known as prime twins or prime pairs.
Frost figures are the figures that have only two factors, that are, 1 and the number itself. Consider an illustration of number 5, which has only two factors 1 and 5. This means it's a high number. Let us take another illustration of the number 6, which has further than two factors, i.e., 1, 2, 3, and 6. This means 6 isn't a high number. Now, if we take the illustration of the number 1, we know that it has only one factor. So, it can not be a high number as a high number should have exactly two factors. This means 1 is neither a high nor a compound number, it's a unique number.
The following are the three pairs of twin primes:
Question ImageThe difference between these prime numbers is two.
Hence, the correct option is 1.
 
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