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?

Answers (1)

some more numbers of this type are :

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

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