Question 13
Determine the of non–negative integer $M$ that satisfies exactly three of the four statements below.
(1) $M$ is prime.
(2) $M+3$ is prime.
(3) $1<\sqrt M<8$.
(4) $M+5$ has an odd number of factors.
(1) $M$ is prime.
(2) $M+3$ is prime.
(3) $1<\sqrt M<8$.
(4) $M+5$ has an odd number of factors.