# Logarithm Mathematics Questions

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Here is solved Mcq’s related to MathematicsPortion. Each has near to 50 Mcq’s which are related to basics. Answer of these Mcq’s is given with each Mcq.

## Logarithm Mathematics Questions

1. If log10 36 = y what does log10 36000 equal?
 A. y B. y+1000 C. 1000 D. y+3 E. y+1

2. If log10 2 = x and log10 3 = y find the value of log10 80?
 A. y+1 B. x+y C. x-y D. x+2y E. none

3. Solve for a : log (a+3) = loga+log3
 A. 1 B. 3?2 C. 2?3 D. 6?5 E. none

4. Evaluate log16 ?56 – log16 ?14
 A. 0 B. 1?4 C. 1 D. 3 E. 1?3

5. Evaluate log9 3 – log5 125 + log625 5 – log7 (343)1/3
 A. 0 B. 1?3 C. 3?28 D. ?13?4 E. none

6. If Log10 G= 1/5 then log10 100G5=?
 A. 7 B. 1?4 C. 4 D. 11?4 E. 3

7. If Logy 6=x logy 3.5 = z and 6a = 3.5 then a = __________
 A. xz B. z/x C. x+z D. z-x E. not determined

8. If g(x) = log2 y then g(3y) – g(y) = ___________
 A. log(2/x)+log2x B. log2 (2+x2)/x C. 1 D. log23 E. log3-log2

9. If log5 p = ?8 and log 8 q = ?5 then pq = _________
 A. 5?8.8?5 B. 13?13 C. 3?3 D. 7?2 E. 0

10. If log64 7 = x log4 7 then x = __________
 A. 4 B. log43 C. 3 D. 1?4 E. log464

11. If log2 = 0.3010 log 3 = 0.4771 evaluate |log 3?25/100|
 A. 0.4516 B. 0.1234 C. 0.5678 D. ?1.534 E. 0.3284

12. Evaluate 49log75
 A. 25 B. 5 C. 6 D. 5?6 E. 7

13. Evaluate log2 (log4 256)
 A. 2 B. 4 C. 3 D. 8 1 E. 8

14. Evaluate 3logb a4 x loga b5
 A. 35 B. 49 C. 60 D. 30 E. 7

15. If log100 u = -2 then u =
 A. 1e+06 B. 1/1000000 C. 0.001 D. 1/10000 E. 100

16. If log81/log3 = x then x is equal to
 A. 2 B. 3 C. 4 E. 7

17. If loge x + loge(1-x) = 0 then
 A. x2+x-1 = 0 B. x2-x+1 = 0 C. x2+x-e = 0 D. x2+x+e = 0 E. x2+7x+e = 0