If a2 + b2 = 7ab, then log [1/3 (a + b)] =
1/2(log a + log b)
log a/2 + log b/2
log a2 + log b2
log a3 + logb3
The exponential form of log1/3 1/27 = 3 is
(1/3)3 = 27
(1/27)3 = 1/3
(1/3)3 = 1/27
None of these
If loga[1 + logb {1 + logc x}] = 0, then x =
1
0
abc
a/bc
If log5a = 3, then value of a is
15
125
25
100
The value of x if log2 (x2 - 1) = log28 is
±2
±3
±4
±5
The logarithmic form of 45 = 1024 is
log4 1024 = 5
log5 1024 = 4
log2 1024 = 200
The logarithmic form of 7-1 = 1/7 is
log7 1/7 = -1
llog7 - 1 = 1/7
log-1 7 = 1/7
log1/7 - 1 = 7
1/2 log10 25 - 2 log103 + log10 18 =
3
2
The logarithm of 5832 to the base 3√2 is
5
6
18
7
log ab - log |b| =
loga
- loga
