Question

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 a) three digit number b) a perfect square number c) a number divisible by 10 d) the factors of 50​

Answer 1

Answer:

a) 0

b) 9/90=1/10

c) 9/90=1/10

d) 2/90=1/45