Evaluate (log_{10}5 + log_{10}20)
-
A.
2 -
B.
3 -
C.
4 -
D.
5
Correct Answer: Option A
Explanation
(log_{10}5 + log_{10}20\
log_{10}[5times 20]\
log_{10}100\
log_{10}10^2\
2log_{10}10=2)
(log_{10}5 + log_{10}20\
log_{10}[5times 20]\
log_{10}100\
log_{10}10^2\
2log_{10}10=2)