Latest TCS Aptitude Question SOLUTION: two cards are set asidefirst what is the probility that that card drawn is a king on next turn?

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(#M40125353) TCS Numerical Ability question probability Keep an EYE

two cards are set asidefirst what is the probility that that card drawn is a king on next turn?

Asked In TCS madhur chauhan (9 years ago)

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aniket gaurav  (8 years ago)

2 cards are drawn aside.
case 1:- no two cards are king .so probability = 4/50
case 2:- 1 cards is king . so probability = 3/50
case 3 :- 2 cards both are kings .probability = 2/50
so total =4/50+3/50+2/50=7/50

Is this solution Helpfull? Yes (14) | No (5)  

chavi tyagi  (8 years ago)

since 2 cards are drawn already, so remaining cards=50
if drawn both cards are king, then probability of next card being king=2c1
if 1 drawn card is king then=3c1
if drawn both cards are not king then=4c1
possible outcomes=2c1+3c1+4c1=9
total outcomes=50c1=50
probability=9/50

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BASAVA PRABHU S  (9 years ago)

1/13 i think

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Shristy kashyap  (8 years ago)

2/25...as 2 cards are kept aside

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Bhrugu  (8 years ago)

There are two cases here:

Case 1: First card chosen is a queen

4/52∗3/51=1/221
Case 2: First card chosen is not a queen.

48/52∗4/51=16/221
Adding both the cases, we get 17/221 = 4/52 = 1/13

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ravi anand  (8 years ago)

is it 1/13

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arpit mathur  (8 years ago)

1/13 conform

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arava mounika  (8 years ago)

can someone explain it

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ARUNIMA PAHARI  (8 years ago)

(4c1*3c1 + 48c1*4c1)/52c2 *2

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