Question

how to find perfect sq number

Answer 1

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Difficulty Level : High !

Chances of being asked in Board : 90%

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Let's start

It is given that the discs are numbered from

=> 1 "to" 90

=> Here all the numbers are to be included both 1 and 90 also.

Thus n = 90 (total outcomes)

(ii) To Find perfect square

Here Favorable Outcomes (m) = 9

=> 1 , 4 , 9 , 16 , 25 , 36 , 49 , 64 , 81

Thus

P(getting a perfect square) = m/n

Thus

P(getting a perfect square) = 9/90

=> 1/10 <<<<<<< Answer

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Hope this helps ✌️