M4maths Previous Puzzles

28 Oct 2016 Probability

What is the probability of getting an ace or a jack in a single draw from a pack of 52 cards is?

OPtion

1) 1/26
2) 1/13
3) 3/13
4) 2/13
5) 1/52
6) 132
7) 13/3
8) 3/26
9) 36/3
10)None of these

Solution

Clearly n(s) = 52.
There are 4 aces and a jacks.

P(E) = n(E)/n(s) = 8/52 = 2/13.

Option 4)

Correct Option: 4 Best Solution (16)

madanpal vishwakarma    8 years AGO

No of Ace card =4
No of jack card =4
so total favourable outcome= 4+4 =8

so probability of getting ace or jack from one drawn is =8/52=2/13

Like? Yes (2) | No   

G.S.Kantharao   8 years AGO

Picking an ace = 4/52 =1/13
Picking a Jack = 4/52 =1/13
Probability of picking ace or jack = 1/13 + 1/13 =2/13.

Like? Yes (2) | No (1)  

codemaker   8 years AGO

total number of ace=4
total number of jack=4
total cards=52
probability=number of outcomes/total number of possible outcomes
=8/52
answer=2/13

Like? Yes | No   

Parikshit Sen   8 years AGO

there are 4 aces and 4 Jacks in a pack of 52 cards. Therefore probability of getting a jack or ace in a single draw from a pack of 52 cards=8/52=2/13

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harshit agrawal   8 years AGO

4 jacks and 4 ace in a pack. 1 card among the 8 card out of the pack of 52

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Dinesh Sharma   8 years AGO

Total no. of ace in 52 cards = 4
Total no. of jack in 52 cards = 4

Therefore, Total no. of ace and jack cards out of 52 = 4 + 4 = 8

so, Prob(an Ace or A Jack) = (4C1 + 4C1)/(54C1) = 8/54 = 2/13. That's why Option 4 is correct

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priyanka singh   8 years AGO

probability of getting ace 4/52
probability of getting jack 4/52
so 4/52 + 4/52 = 2/13

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akash patel   8 years AGO

probability of getting one ace=1/13
this is same for Jack..

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PINTU PRASAD GUPTA   8 years AGO

total number of ace and jack = 4 ace +4 jack =8
there for probability = 8/52=2/13
hence option = 4

Like? Yes | No (1)  

suma priya   8 years AGO

probability of getting ace - 4/52
probability of getting jack - 4/52
probability of getting ace or jack - 4/52+4/52
8/52
2/13

Like? Yes | No (1)  

rohit   8 years AGO

becoz 4 jack and 4 ace so in one draw the probability is 8/52 =2/13

Like? Yes | No (1)  

P.V.Vishnu Prasanth   8 years AGO

no.of aces=4; no.of Jack= 4
total=8; probability=8/52;
2/13

Like? Yes | No (1)  

JENSI KARUNYA.S   8 years AGO

probability for getting an ace card=4/52
probability for getting an jack card=4/52
probability to get ace or jack in a single draw=(4/52)+(4/52)
=8/52=2/13
option 4) 2/13 is the correct answer

Like? Yes | No (1)  

Amit kumar singh   8 years AGO

Probability of ace=4/52
Probability of Jack=4/52
Required probability=4/52+4/52=2/13

Like? Yes | No (1)  

gulshan   8 years AGO

Probability of ace=4/52
Probability of jack =4/52
in single draw =4/52+4/52
=8/52
=2/13
thays ans 2/13

Like? Yes | No (1)  

Nitish kesarwani   8 years AGO

total event =52
event occured ace or jack=4+4=8
probabilty= 8/52=2/13
option 4

Like? Yes | No (1)