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NDA Math Probability

Question : 84 of 100

Marks: +1, -0

Solution:

Let P (A) denote the probability of getting an Ace. We know that there are in total 4 aces and 52 cards.

Hence

P(A)=\frac{4}{52}=\frac{1}{13}

Now probability of drawing two successive aces without replacement from a well shuffled deck of cards will be equal to

=\left(\frac{4}{52}\right)\left(\frac{3}{51}\right)

=\left(\frac{1}{13}\right)\left(\frac{1}{17}\right)

=\frac{1}{13 \times 17}

=\frac{1}{221}

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