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CMAT 2021 Solved Question Paper
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© examsnet.com
Question : 1
Total: 100
Section A :
Quantitative Techniques & Data Interpretation
During the next year, the probability that a Company A releases a mobile is
0.7
.
The probability that mobile is a success, given that it is released by the Company A is
0.8
.The probability that a mobile is a success and released by a Company Bis
0.28
. A mobile released by either Company A or Company B during the next one year is a success. Find the probability that it is released by Company A.
1
∕
3
1
∕
2
2
∕
3
3
∕
4
Validate
Solution:
We have,
P
(
A
)
=
0.7
,
P
(
S
∕
A
)
=
0.8
and
P
(
B
)
×
P
(
S
∕
B
)
=
0.28
∴ Required probability
P
(
A
∕
S
)
=
P
(
A
)
.
P
(
S
∕
A
)
P
(
A
)
P
(
S
∕
A
)
+
P
(
B
)
P
(
S
∕
B
)
=
0.7
×
0.8
0.7
×
0.8
+
0.28
=
0.56
0.56
+
0.28
=
0.56
0.84
=
2
3
© examsnet.com
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