Logarithm with Explanation

Q8. If logx = -0.5, then x is equal to

A.
256

81
B.
81

256
C.
3

4
D.
4

3

Q9. If logx 4 = 2, then x is equal to

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

Q10. log 360 is equal to

A. 3log 2 + 2log 3 B. 3log 2 - 2log 3 + log5
C. 3log 2 + 2log 3 + log5 D. 2log 2 + 3log 3

Q11. If log10 2 = 0.3010, the value of log10 80 is

A. 1.9030 B. 1.6020
C. 9.9030 D. 3.6020

Q12. If a = bx, b = cy and c = az, then the value of xyz is equal to

A. abc B. -1
C. 0 D. 1

Q13. log5 3 x log3 625 equals:

A. 3 B. 4
C. 1 D. 2

Q14. logb a x logc b x loga c is equal to:

A. a + b + c B. abc
C. -1 D. 1