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UPSC 2013 CDS 2 Math Paper
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© examsnet.com
Question : 31
Total: 100
Which is the smallest number among the following?
[2013 CDS-II]
[
(
5
−
2
)
−
2
]
−
2
[
(
5
−
2
)
2
]
−
2
[
(
2
−
5
)
−
2
]
−
2
[
(
2
−
5
)
2
]
−
2
Validate
Solution:
From the given options Option (a)
(
(
5
−
2
)
−
2
)
−
2
=
5
−
8
=
1
5
8
=
1
625
×
625
Option (b)
(
(
5
−
2
)
2
)
−
2
=
5
8
Option (c)
(
(
2
−
5
)
−
2
)
−
2
=
2
−
20
=
1
2
20
=
1
1024
×
10024
Option (d)
(
(
2
−
5
)
2
)
−
2
=
2
20
So
(
(
2
−
5
)
−
2
)
−
2
is the smallest number.
© examsnet.com
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