Latest Others Aptitude Question SOLUTION: A man play a game of cards in casino.the man has to pay Rs.10 for drawing a card from a well shuffled pack of cards.If a numbered card turns up,the man doubles his money else hefor

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(#M40019843) OTHERS HR Interview question probability Keep an EYE

A man play a game of cards in casino.the man has to pay Rs.10 for drawing a card from a well shuffled pack of cards.If a numbered card turns up,the man doubles his money else heforfeits it.In the long run,what ishis expected gain or loss per carddrawn?

Asked In Others M.Sivaranjani (10 years ago)

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Pravin  (10 years ago)

Rs 5.38 gain per card drawn
probability of drawn card to be number is 10/13 and probability of drawn card not being an number is 3/13. for 13 cards drawn gain is 70 rs. for one card it is 5.38 rs.

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vanshika  (10 years ago)

probability of drawing a num. card is 36/52=9/13
out of 13 tries he will will 9
gain per try is (9/13)*10= 6.9
probability of not drawing a num. card is 1-9/13=4/13
loss per try is 4/13*10=3.07

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Krishna  (6 years ago)

In a pack of 52 cards there will be 4 sets of 13 differently marked card.
Total numbered cards are 9 out of 13
There fore he gets a profit of 9*10=90
Remaining 4 out of 13 are cards with figures he gets a loss of 4*10=40
Hence total gain =90-40=50
Now this 50 is aprofit on 13 cards
And net profit on one card is 50/13=3.85

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