Question

A box contains cards numbered from 10 to 122. A card is drawn at random from the box. Find the probability that the number of the card is (i) A perfect square number (ii) A multiple of 7

Answer 1

Answer :-

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Solution :-

Square numbers from 10 to 122 = 16, 25, 36, 49, 64, 81, 100 and 121 

Total square number from 10 to 122 = 8

Total cards numbered from 10 to 122 = 113

i) P(a square number) = 8/113

Multiples of 7 from 10 to 122 = 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119

Total multiples of 7 from 10 to 122 = 16

ii) P(a multiple of 7) = 16/113

Answer.

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Thanks!

Answer 2

Answer:

¡) 8/113

¡¡) 16/113

Step-by-step explanation:

No. of total outcomes = 122- 9

= 113

As 1,2,3,4,5,6,7,8&9 are not considered.

No. of perfect square between 10 and 122 = 8

Probability = 8/113

No. of 7 multiple = 17

Probability = 17/113

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