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  • Observe that 2 multiply 3 plus 1 is equal to 7 is a prime number Here 1 has been added to a multiple of 2 to get a prime number Can you find some more numbers of this type

Q. Observe that 2 × 3 + 1 = 7 is a prime number. Here, 1 has been added to a multiple of 2 to get a prime number. Can you find some more numbers of this type?

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some more numbers of this type are :

2 \times 2+1=5
2 \times 5+1=11
2 \times 6+1=13

Posted by

Pankaj Sanodiya

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