Q27. Cards marked with numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box randomly, then the probability that the number on card is a perfect square.

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Q27. Cards marked with numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box randomly, then the probability that the number on card is a perfect square.

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(A) 9/100
(B) 1/10
(C) 3/10
(D) 19/100

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Class 10 Maths swatiqna 3 years 2021-12-28T13:45:18+00:00 2021-12-28T13:45:18+00:00 1 Answer 8 views Enlightened 0

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swatiqna Enlightened · Answer 1 · 2021-12-28T13:46:03+00:00

swatiqna Enlightened

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2021-12-28T13:46:03+00:00 December 28, 2021 at 1:46 pm

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Answer: (B)
Explanation: The perfect square
numbers between 2 to 101 are:
1, 4, 9, 16, 25, 36, 49, 64, 81, 100
Total numbers from 2 to 101 =100
So probability of getting a card
with perfect square number is:
P (perfect square) = 10/100
⇒ P (perfect square) = 1/10

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Q27. Cards marked with numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box randomly, then the probability that the number on card is a perfect square.