Question

A box contains 50 discs which are numbered from 1 to 50. 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 number (iii) a number divisible by 5.

Answer 1

Answer:

(I)2 digit numbers are 25

so 25/50 = 1/2

(ii) a perfect sqare number are 7 s

so 7/50

(iii) number divisible by 5 are 10

10/50= 1/5