A box contains 90 discs which are numbered from 1 to 90
MATHEMATICS · Multi-part · CBSE · Mathematics · Probability · Probability
Problem
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears
(1) a two-digit number
(2) a perfect square number
(3) a number divisible by 5