Question

18. 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 number (iii) a number divisible by 5.​

Answer 1

Answer:

Explanation:

1> the probability is 81/90. or 9/10

2> THE probability is 9/90 or 1/10.

3> the probability is 18/90 or 1/5 .

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