Latest TCS Aptitude Question SOLUTION: What is the probability of getting a queen or spade from a set of cards?

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What is the probability of getting a queen or spade from a set of cards?

Asked In TCS gaurav agarwal (9 years ago)

Solved KAZI AMINUDDIN ZAMAN Read Solution (18)

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KAZI AMINUDDIN ZAMAN  (9 years ago) Best Solution

no. of spade = 13
no. of queen = 3 (excluding queen of spade)
no. of possible outcome = 13+3 = 16
probability = no. of favorable outcome/ total possible outcomes = 16/52 = 4/13

Is this solution Helpfull? Yes (39) | No (4)  

komal  (9 years ago)

total cards=52
no. of spade=13
so, probability of spade=13/52
no. of queen(total)=4
so,prob. of queen=4/52
Now, as 1 queen will be chosen from spade i.e. it will be common=1/52

therefore,using formula..P(AUB)=P(A)+P(B)-P(AUB)
putting values
P(AUB)=13/52+4/52-1/52 =16/52 or 4/13.

Is this solution Helpfull? Yes (24) | No   

bhanu shakya  (9 years ago)

4c1+13c1/52

Is this solution Helpfull? Yes (3) | No (5)  

raviteja  (9 years ago)

there are 13 spades and 4 queen so 13+4/52=17/52

Is this solution Helpfull? Yes (2) | No (17)  

suresh reddy  (9 years ago)

total cards=52
spades=13
queen=4
but,one queen is included in spade..so queen=3
required probability=(13+3)/52=16/52=4/13

Is this solution Helpfull? Yes (2) | No   

aashima  (9 years ago)

its 4/13..probability of getting queen is 4/52 and probability of getting spade is 13/52 but spade queen has been included so its 12/52
ans:-12/52+4/52=16/52=4/13

Is this solution Helpfull? Yes (1) | No   

Supada Choudhari  (9 years ago)

spade=13
queen=3
probability=3/52+13/52=16/52
=4/13

Is this solution Helpfull? Yes (1) | No   

Dhanalakshmi  (9 years ago)

SPADE=13/52
QUEEN EXCEPT IN SPADE=3/52
=(13/52)+(3/52)
=16/52
=4/13

Is this solution Helpfull? Yes (1) | No   

priya gupta  (9 years ago)

4/52 will be the answer..

Is this solution Helpfull? Yes | No (3)  

nitin  (9 years ago)

Please send me tcs paper nitincr89@gmail.com

Is this solution Helpfull? Yes | No (4)  

SHREYA   (9 years ago)

no of spade= 13
no of queens left= 3(excluding the queen of spades)
probability=16/52 =4/13

Is this solution Helpfull? Yes | No   

KANHAIYA  (9 years ago)

it will be 16/52

Is this solution Helpfull? Yes | No   

rahul gera  (9 years ago)

getting a queen in 4 ways and a spade in 13 ways since we have chosen the queen of spade
reqd prob=4+12/52
=16/52=4/13

Is this solution Helpfull? Yes | No   

Ingit Bhatnagar  (9 years ago)

Total queens r 4 out of which one is spade.
Nd total spades r 13 out of which one is queen
So total cards dat r either queen or spade are=13+4-1
So probability=16/52

Is this solution Helpfull? Yes | No   

Raghav gupta  (9 years ago)

spade includes queen of spade so if we count 13 spades then we must count remaining 3 queens 13/52+3/52=16/52

Is this solution Helpfull? Yes | No   

Sreehari Pullasetty  (9 years ago)

There are 4 queens in the 52 cards.
There are 13 cards in spades(Including 1 queen).
So we can select 4 queens or 12 spades excluding queen from 13 spades.
so 12+4=16
total probability is 16/52= 4/13

Is this solution Helpfull? Yes | No   

Kritika Kathi  (9 years ago)

Probability of getting a Queen,P(a)=4/52
Probability of getting a Spade,P(b)=13/52
Common case: 1/52 (Queen of Spade)
ans: (4/52)+(13/52)-(1/52)=4/13

Is this solution Helpfull? Yes | No   

Thangam  (7 years ago)

probability of getting spade=(13/52)
probability of getting queen=(3/52) already a spade queen taken above.
so the total probability =(13/52)+(3/52)=(16/52)

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