Maths Probability Medium
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find th…
A box contains discs which are numbered from to . 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 .
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