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Aptitude - Logarithm - Discussion

Discussion Forum : Logarithm - General Questions (Q.No. 6)
Logarithm
6.
If log10 7 = a, then log10 1 is equal to:
70
- (1 + a)
(1 + a)-1
a
10
1
10a
Answer: Option
Explanation:
log10 1
70
= log10 1 - log10 70
= - log10 (7 x 10)
= - (log10 7 + log10 10)
= - (a + 1).
Discussion:
33 comments Page 4 of 4.
Sunder said:   5 years ago
Thank you @Rohit.
Anbu said:   8 years ago
Nice. Thank you.
Habib said:   5 years ago
Thanks @Rohit.
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