Multiple choice

A kid has 3 identical shaped cards in his pocket, two of them have T printed on one side and H on the other whereas the third one has H printed on both the sides. He takes one card out of his pocket randomly and finds H printed on one side of the card, what is the probability that the drawn card is the one with H printed on both the sides?

  1. 1/2

  2. 2/5

  3. 3/5

  4. 4/5

  5. 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If all the three cards are considered, then originally they had 4 Hs and 2 Ts. Since one H has already been revealed, now the probability of getting one more H out of 3 Hs and 2 Ts is to be found OR (3 Hs)/(3 Hs + 2 Ts) = 3/5

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