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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

High School Mathematics
3.13 Problems on Logarithms - V

Example:
Find the value of log8512.
Solution:
Method - I:
Let log8512 = x
By definition of logarithm
8x = 512
8x = 8 * 8 * 8
x = 83
Bases are equal so indices are also equal.
Therefore, x = 3
i.e., log8512 = 3.

Method - II:
Given that, log8512
512 = 8 * 8 * 8 = 83
= log883
= 3log88
= 3 [Since logaa = 1]


Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: Find the value of log20400.
1
3
0
2

Q 2: Find the value of log981.
0
2
1
3

Q 3: Find the value of log174913.
2
0
1
3

Q 4: Find the value of log15225.
1
3
2
0

Q 5: Find the value of log7343.
2
4
3

Q 6: Find the value of log16256.
4
3
1
2

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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