41345.Rajeev multiplies a number by 10, the log (to base 10) of this number will change in what way?
Increase by 10
Increase by 1
Multiplied by 10
None of these
41346.The logarithm of a very small positive number will tend to which of the following?
0
negative infinity
positive infinity
1
41347.If n numbers are in geometric progression, the logarithm of the number will be in which of the following?
Geometric Progression
Arithmetic Progression
Harmonic Progression
None of these
41348.Which of the following is equivalent to log(a + b) ?
log a + log b
log a * log b
log a - log b
None of these
41352.If n numbers are in arithmetic progression, the logarithm of the number will be in which of the following?
Exponentially
Linearly
Quadratically
None of these
41377.Walking 6/7th of his usual speed, a man is 12 minutes too late. The usual time taken by him to cover that distance is:
1 hour
1 hr 12min
1 hr 15 min
1 hr 20 min
41378.A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively ?
2 : 1
3 : 2
8 : 3
Cannot be determined
None of these
41379.In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:
21 m
26 m
28 m
29 m
41380.In a family, the father took 1/5 of the cake and he had 4 times as much as others had, then the family members are:
16
17
18
None of these
41381.The price of sugar is increased by 25%. In order not to increase the expenditure a lady must reduce her consumption by:
25%
20%
30%
None of these
41382.I read 3/8 of a book on one day, and 4/5 of the remainder on another day. If now there were 30 pages unread, the book contains:
240 pages
230 pages
340 pages
140 pages
None of these
41383.In an examination, 70% of students passed in physics, 65% in chemistry, 27% failed in both subjects. The percentage of students who passed is:
66%
62%
69%
None of these
41384.An article was sold for Rs. 2770. Had it been sold for Rs. 3000 there would have been an additional gain of 10%. Cost Price of the article is:
Rs. 2100
Rs. 2200
Rs. 2300
Rs. 2400
None of these
41385.Rakesh buys a scooter worth Rs. 10,000. He sells it to Mohan at a profit of 10%. If after sometime Mohan sells it back to Rakesh at a loss of 10%, then totally:
Rakesh loses Rs. 100
Rakesh loses Rs. 1100
Rakesh gains Rs. 100
Rakesh gains Rs. 1100
None of these
41386.The list price of an electric iron is Rs. 300. If two successive discounts of 15% and 10% are allowed, its selling price will be:
Rs. 229.50
Rs.231.50
Rs.232.50
Rs. 234.50
None of these
41387.The rate of compound interest at which a sum of Rs. 8000 amounts to Rs. 8820 in 2 years, is:
5%
4%
6%
7%
None of these
41388.A car is 250 metres behind the bus. The car and bus are moving with speed 60 km/hr and 35 km/hr respectively. The car will be ahead of bus by 250 metres in:
37 seconds
48 seconds
72 seconds
68 seconds
None of these
41389.Mohan walks a certain distance and rides back in 6 hours and 15 minutes. If he walks both ways he takes 7 hours and 45 minutes. If Mohan rides both ways the time which he will take will be:
4 hours
19/4 hours
9/2 hours
17/4 hours
None of these
41390.Population of a village is eight thousand. If 6% men and 10% women are added, population becomes 8,600, then the number of men in the village was:
4800
5000
5060
6000
41391.If 15 oxen or 20 cows can eat the grass of a field in 80 days, then in how many days will 6 oxen and 2 cows eat the same grass?
40
60
100
160
41392.At a certain party the ratio of gents and ladies was 1 : 2. But when 2 gents and 2 ladies left the party, the ratio became 1 : 3. How many people were initially present in the party?
12
15
18
24
41393.Prabodh bought 30 kg of rice at the rate of Rs. 8.50 per kg and 20 kg of rice at the rate of Rs. 9.00 per kg. He mixed the two. At what price (App.) per kg should he sell the mixture in order to get 20% profit?
Rs. 9.50
Rs. 8.50
Rs. 10.50
Rs. 12.00