Aptitude - Probability - Discussion
Discussion Forum : Probability - General Questions (Q.No. 13)
13.
Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:
Answer: Option
Explanation:
Let S be the sample space.
| Then, n(S) = 52C2 = | (52 x 51) | = 1326. |
| (2 x 1) |
Let E = event of getting 1 spade and 1 heart.
 n(E) |
= number of ways of choosing 1 spade out of 13 and 1 heart out of 13 |
| = (13C1 x 13C1) | |
| = (13 x 13) | |
| = 169. |
| P(E) = |
n(E) | = | 169 | = | 13 | . |
| n(S) | 1326 | 102 |
Discussion:
42 comments Page 4 of 5.
Farheen said:
9 years ago
P(c) = n(c)/n(s).
= 1/52 a king of hearts . Is it true?
= 1/52 a king of hearts . Is it true?
Aisha said:
9 years ago
From where did 13 come? Can anyone explain? please.
Vedant said:
7 years ago
It is very helpful explanation, Thanks @Khetesh.
Sasi said:
7 years ago
Why not adding two type of cards as 26c2?
Naj said:
10 years ago
Why do we have to divide (52 x 51) by 2?
Harish said:
9 years ago
Answer should be probability = 13/51.
VANAMALA SRINIVAS said:
8 years ago
No, the correct answer is 3/102.
Priya said:
1 decade ago
Why can't it be 26C2/52C2?
HARSHA said:
7 years ago
Here how we got 13?
Amol said:
1 decade ago
Thanks Probability
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