A box contains 90 discs which are numbered from 1 to 90. If one disc i – InterviewSolution

1.	A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at randomfrom the box, find the probability that it bears () a two-digit number (i) a perfectsquare number (ii) a number divisible by 5.18.
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