If log10 2 = 0.3010, then log10 80 equals:
A. 1.6020
B. 1.9030
C. 3.9030
D. None of these
Answer:B
If log10 2 = 0.3010, then log10 80 equals:
A. 1.6020 B. 1.9030 C. 3.9030 D. None of these
Explanation: 3 log10 2 + 1 = (3 x 0.3010) + 1 = 1.9030. log10 80 = log10 (8 x 10) = log10 8 + log10 10 = log10 (23 ) + 1 = 3 log10 2 + 1 = (3 x 0.3010) + 1 = 1.9030.