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Q1
:
If log
10
2 = 0.3010, the value of log
10
80 is:
A
1.6020
B
3.9030
C
None of these
D
1.9030
Solution
ANS:
B
- 1.9030
log
10
80
= log
10
(8 x 10)
= log
10
8 + log
10
10
= log
10
(2
3
) + 1
= 3 log
10
2 + 1
= (3 x 0.3010) + 1
= 1.9030.
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