Logarithm with Explanation

Q1. log   10 + log 100 is equal to

A. 2 B. 1.5
C. 2.5 D. 3

Q2. The value of 25 log5 6 is

A. 5 B. 36
C. 25 D. 6

Q3. If log5 8 = p, then log5 is equal to

A. 4p B. 8p
C. (p + 1)-1 D. -(p + 1)

Q4. If log5 (x2 + x) - log 5 (x + 1) = 2, then the value of x is

A. 30 B. 25
C. 10 D. 5

Q5. If log9 x + log 3 x = 9, then the value of x is

A. 27 B. 81
C. 243 D. 729

Q6. (log5 5)(log4 9)(log3 2) is equal to

A. 2 B. 5
C. 1 D. 3

Q7. The value of log2 (log5 625) is

A. 4 B. 2
C. 6 D. 8