Logarithm Test

Result

Logarithm Test - 2

Score
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Weekly Quiz Competition

Question 1
3 / -1

Which of the following statements is not correct?

A
log(2×4×6)= log 2 + log 4 + log 6

B
log₅1 = 0

C
log(3+4) = log(3 × 4)

D
log₅5 = 1

Solution
Question 2
3 / -1

If log 2 = 0.3010 and log 3 = 0.4771, the value of log₅ 512 is:

A
2.870

B
2.967

C
3.876

D
3.912
Question 3
3 / -1

A

B

C

D

Solution
Question 4
3 / -1

A

B

C

D

Solution
Question 5
3 / -1

A
a = b

B
a + b = 1

C
a - b = 1

D
a² - b² = 1

Solution
Question 6
3 / -1

If log(64)= 1.806, log(16) = ?

A
1.204

B
0.903

C
1.806

D
None of these

Solution
Question 7
3 / -1

If log 2 = 0.3010 and log 3 = 0.4771, What is the value of log₅1024?

A
4.31

B
3.88

C
3.91

D
2.97

Solution
Question 8
3 / -1

if log 2 = 0.30103 and log 3 = 0.4771, find the number of digits in (648)⁵.

A
15

B
14

C
13

D
12

Solution
Question 9
3 / -1

if log 2 = 0.30103, the number of digits in 2¹²⁸ is

A
38

B
39

C
40

D
41

Solution

log(2¹²⁸) = 128log(2) = 128 × 0.30103 ≈ 38.4

ie, its characteristic = 38

Hence, number of digits in 2¹²⁸ = 38+1 = 39
Question 10
3 / -1

A

B

C

D

Solution