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Haryana Police Constable Model Paper 4
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© examsnet.com
Question : 15
Total: 100
One card is drawn from a pack of well shuffle cards. what will be the probability of a diamond card?
1/8
1/4
1/5
1/6
Validate
Solution:
Formula used
:
n
C
r
=
n
!
(
(
n
−
r
)
!
×
r
!
)
Calculation
:Let S be the sample space then,
n(S) = number of way of selecting 1 card out of 52 card
⇒
n
(
S
)
=
52
C
1
=
52
Let E be the event of getting a diamond card
Total number of diamond card = 13
n(E) =
13
C
1
= 13
P
(
E
)
=
n
(
E
)
n
(
S
⇒ P(E) =
13
52
⇒
1
4
∴
The probability of a diamond card is 1/4
© examsnet.com
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