CoCubes Logarithms Question and Answers Quiz-1

Question 1

Time: 00:00:00

If log_x (0.1) = -1/3, then the value of x is -

10

1000

10000

100

Question 4

Time: 00:00:00

If log x + log y = log (x + y), then which statement follows:

y = x/(x-1)

xy=1

y = (x-1)/x

x = y

Question 5

Time: 00:00:00

If log10 7 = a, then log10(1/70) will be equal to:

1/10a

(1 +16 a)-1

a/10

-(1 + a)

Question 6

Time: 00:00:00

If log{(a+b)/3} = 0.5(log a + log b), then the correct relation between a and b will be:

a²+b² = 7ab

a²-b² = 7ab

(a+b)² = 2

(a+b)/3 = (1/2)(a+b)

Question 10

Time: 00:00:00

Which of the following statements is not correct?

log₁₀ 10 = 1

log (2 + 3) = log (2 x 3)

log₁₀ 1 = 0

log (1 + 2 + 3) = log 1 + log 2 + log 3