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Experimental/Empirical Probability

Cards are num...

Question

Cards are numbered 1,2,....,20,21 and placed in a box. The cards are mixed thoroughly. A card is drawn at random from the box. Find the probability of getting a card which is perfect square

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Solution

total outcomes = $21$

favorable outcomes = $4$ (i.e., $1, 4, 9, 16$ )

probability = $\frac{f a v o u r a b l e o u t c o m e s}{t o t a l o u t c o m e s}$

P(of getting card with a perfect square number) = $\frac{4}{21}$

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