self
Maths Puzzle
If log10 7 = a, then log10 1 is equal to:
70
A. - (1 + a) B. (1 + a)-1
C.
a
10
D.
1
10a
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self Other Question
If log a + log b = log (a + b), then:
b a
A. a + b = 1 B. a - b = 1
C. a = b D. a2 - b2 = 1
If log10 2 = 0.3010, then log2 10 is equal to:
A.
699
301
B.
1000
301
C. 0.3010 D. 0.6990