Cards marked with numbers 40 , 41 , 42..........60 are well shuffled and a card is drawn at random. What is the probability that the number on the card is a perfect square?

\frac{1}{21}

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\frac{4}{20}

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\frac{1}{19}

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\frac{5}{19}

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Solution

The correct option is A $\frac{1}{21}$
Total number of outcomes = 21.
Between 40 and 60 there is only one perfect square which is 49.
So, number of favorable outcomes is 1.
$∴$ probablity = $\frac{1}{21}$

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Cards marked with numbers 40 , 41 , 42..........60 are well shuffled and a card is drawn at random. What is the probability that the number on the card is a perfect square?

The correct option is A 121Total number of outcomes = 21. Between 40 and 60 there is only one perfect square which is 49. So, number of favorable outcomes is 1. ∴ probablity = 121

The correct option is A $\frac{1}{21}$
Total number of outcomes = 21.
Between 40 and 60 there is only one perfect square which is 49.
So, number of favorable outcomes is 1.
$∴$ probablity = $\frac{1}{21}$