Question

A number x is chosen at random from the first 100 natural numbers. Let A be the event of numbers which satisfies ((x - 10)(x - 50)/(x - 30)) ≥ 0, then P(A) is …

(a) 0.20 

(b) 0.51 

(c) 0.71 

(d) 0.70

Answer 1

(c) 0.71

Given n(S) = 100

Also