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- Question
If logaab = x, then logbab = ?
Options- A. 1/x
- B. x/(x+1)
- C. x/(1-x)
- D. x/(x-1)
- Correct Answer
- x/(x-1)
- 1. If log 27 = 1.431, then the value of log 9 is
Options- A. 0.754
- B. 0.854
- C. 0.954
- D. 0.654 Discuss
- 2. If log 2 = 0.30103, Find the number of digits in 256 is
Options- A. 17
- B. 19
- C. 23
- D. 25 Discuss
- 3. If log 2 = 0.3010 and log 3 = 0.4771, the values of log5 512 is
Options- A. 2.875
- B. 3.875
- C. 4.875
- D. 5.875 Discuss
- 4. From a point P, the angle of elevation of a tower is such that its tangent is 3/4. On walking 560 metres towards the tower the tangent of the angle of elevation of the tower becomes 4/3. What is the height (in metres) of the tower?
Options- A. 720
- B. 960
- C. 840
- D. 1030 Discuss
- 5. Two trees are standing along the opposite sides of a road. Distance between the two trees is 400 metres. There is a point on the road between the trees. The angle of depressions of the point from the top of the trees are 45 deg and 60 deg. If the height of the tree which makes 45 deg angle is 200 metres, then what will be the height (in metres) of the other tree?
Options- A. 200
- B. 200?3
- C. 100?3
- D. 250 Discuss
- 6. If logx916 = -12, then the value of x?
Options- A. -3/4
- B. 3/4
- C. 81/256
- D. 256/81 Discuss
- 7. If log72 = m, then log4928 is equal to ?
Options- A. 1/(1+2m)
- B. (1+2m)/2
- C. 2m/(2m+1)
- D. (2m+1)/2m Discuss
- 8. Find the logarithm of 144 to the base 23 :
Options- A. 2
- B. 4
- C. 8
- D. None of these Discuss
- 9. If logxl+m-2n = logym+n-2l = logzn+l-2m , then xyz is equal to
Options- A. 0
- B. 1
- C. lmn
- D. 2 Discuss
- 10. If log 64 = 1.8061, then the value of log 16 will be (approx)?
Options- A. 1.9048
- B. 1.2040
- C. 0.9840
- D. 1.4521 Discuss
Logarithm problems
Search Results
Correct Answer: 0.954
Explanation:
log 27 = 1.431
log
= 1.431
3 log 3 = 1.431
log 3 = 0.477
log 9 = log(
)= 2 log 3 = (2 x 0.477) = 0.954
Correct Answer: 17
Explanation:
=56*0.30103 =16.85768.
Its characteristics is 16.
Hence, the number of digits in is 17.
Correct Answer: 3.875
Explanation:
ANS: log5512 = log512/log5 = = = =2.709/0.699 =2709/699 =3.876
Correct Answer: 960
Correct Answer: 200?3
Correct Answer: 256/81
Correct Answer: (1+2m)/2
Explanation:
=
=
=
=
.
Correct Answer: 4
Explanation:
Correct Answer: 1
Correct Answer: 1.2040
Explanation:
Given that, log 64 = 1.8061
i.e
--> 3 log 4 = 1.8061
--> log 4 = 0.6020
--> 2 log 4 = 1.2040
Therefore, log 16 = 1.2040
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