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UPSC CDS-1 2021 Math Solved Paper
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© examsnet.com
Question : 1
Total: 100
What is
log
10
31.25
equal to?
3
−
5
log
10
2
3
−
2
log
10
2
5
−
5
log
10
2
5
−
3
log
10
2
Validate
Solution:
👈: Video Solution
we can write
31.25
=
3125
100
=
125
4
=
1000
32
log
10
31.25
=
log
10
(
1000
32
)
=
log
10
10
3
−
log
10
2
5
=
3
−
5
log
10
2
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