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Aptitude :

Logarithm




1.
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




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

2.870
2.967
3.876
3.912




3.
If log 27 = 1.431, then the value of log 9 is:

0.934
0.945
0.954
0.958




4.
If log10 2 = 0.3010, then log2 10 is equal to:

1000/201
1000/301
301/101
301/103




5.
If log10 2 = 0.3010, the value of log10 80 is:

1.6020
1.9030
3.9030
None of these




6.
If log10 5 + log10 (5x + 1) = log10 (x + 5) + 1, then x is equal to:

1
3
5
10




7.
If log 2 = 0.30103, the number of digits in 264 is:

18
19
20
21




8.
If logx y = 100 and log2 x = 10, then the value of y is:

210
2100
21000
210000




9.
The value of log2 16 is:

1/8
4
8
16




10.
    What is the characteristic of the logarithm of 0.0000134?

5
-5
6
-6




11.
   Which of the following statements is not correct?

log10 = 1
log (2 + 3) = log (2 x 3)
log1 = 0
log (1 + 2 + 3) = log 1 + log 2 + log 3




12.
   A fast moving superfast express crosses another pasenger train in 20 seconds. The speed of faster train is 72 km/hr and speeds of slower train is 27 km/h. Also the length of faster ntrain is 100m, then find the length of the slower train if they are moving in the same direction.

100 m
150 m
125 m
175 m










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FreshersLive - No.1 Job site in India. Here you can find latest 2016 government as well as private job recruitment notifications for different posts vacancies in India. Get top company jobs for both fresher and experienced. Job Seekers can get useful interview tips, resume services & interview Question and answer. Practice online test free which is helpful for interview preparation. Register with us to get latest employment news/rojgar samachar notifications. Also get latest free govt and other sarkari naukri job alerts daily through E-mail.