A prime number is called a super-prime if doubling it and then subtracting 1 results in another prime number, then the number of Superprimes less than 15 is _ _ _ _ _ _.
A. 2
B. 3
C. 4
D. 8
A prime number is called a super-prime if doubling it and then subtracting 1 results in another prime number, then the number of Superprimes less than 15 is _ _ _ _ _ _.
A. 2
B. 3
C. 4
D. 8
Harshit Singh , 3 Years ago
Grade 12th pass
