Logarithm - Aptitude Practice Questions & Answers (MCQ)

Q11

Q11 If 2logX = 5logY + 3, then the relation between X and Y is?

A

X^2 = 100Y^2

B

X^1/5 = 1000*Y^1/2

C

X^2 = 100*Y^5

D

X^2 = Y^5 + 1000

Q12

Q12 $I f l o g_{10} 5 + l o g_{10} (5 x + 1) = l o g_{10} (x + 5) + 1, t h e n x i s e q u a l t o :$

A

1

B

3

C

5

D

10

Q13

Q13 $I f l o g_{x} y = 100 a n d l o g_{2} x = 10, t h e n t h e v a l u e o f y i s :$

A

2^10

B

2^100

C

2^1000

D

2^10000

Q14

Q14 $T h e v a l u e o f l o g_{2} 16 i s :$

A

1/8

B

4

C

8

D

16

Q15

Q15 $F i n d t h e v a l u e o f l o g_{2} 2 + l o g_{2} 2^{2} + l o g_{2} 2^{3} + . . . . . . . . + l o g_{2} 2^{n} .$

A

n(n+1)/2

B

n+1

C

n

D

2n

Q16

Q16 $F i n d t h e v a l u e o f x, i f l o g_{10} (x - 10) = 1.$

A

20

B

30

C

40

D

50

Q17

Q17 Solve for x, if (log 225/log15) = log x

A

100

B

200

C

150

D

250

Logarithm Questions & Answers

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