A number is chosen at random from the set

MATHEMATICS · Single correct · IB Diploma Programme · Mathematics: Analysis and Approaches · Functions · Functions

Problem

A number

x

is chosen at random from the set

\{1, 2, 3, 4, \dots, 100\}

. Define the event:

A

= the chosen number

x

satisfies

\frac{(x-10)(x-50)}{(x-30)} \ge 0

Then

P(A)

is: (a) 0.71 (b) 0.70 (c) 0.51 (d) 0.20