Question

the number of prime numbers satisfying the inequality x^2-1/2x+5 lesser than or equal to 3 is a)1 b)2 c)3 d)4​

Answer 1

Answer:

Correct option is

D

(−∞,3)

We have,

x−2<1

⇒x−2+2<1+2

⇒x<3

∴xϵ(−∞,3)