A box contains 90 discs which  are numbered from  1 to 90. If  one disc is  drawn at  random
Channel: Doubtnut
Date: 2020-04-19

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 (i) a  two -digit number, (ii) a perfect square numbes, (iii) a number divisible by 5.