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Q:

At a casino in mumbai, there are three tables A, B and C. The payoffs at A is 10:1, at B is 20:1 and at C is 30:1. If a man bets Rs 200 at each table and win at two of the tables, what is the maximum and minimum difference between his earnings can be?

A) Rs.2500 B) Rs.2000
C) Rs.4000 D) None of these
 
Answer & Explanation Answer: C) Rs.4000

Explanation:

Maximum earning will be only when he will won on the maximum yielding table.

     A ----> 10:1

     B ----> 20:1

     C ----> 30:1

 i.e, he won on B and C but lost on A

 20 x 200 + 30 x 200 -1 x 200 = 9800

 minimum earning will be when he won on  table A and B and lose on that table 3.

 

Therefore, 10 x 200 + 20 x 200 - 1 x 200  =  6000-200 = 5800

Therefore, Difference= 9800 - 5800 = 4000

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Filed Under: Ratios and Proportions

Q:

Frederick Sanger is a twice recipient of the Nobel Prize for

A) Chemistry in 1958 and 1980 B) Physics in 1956 and 1972
C) Chemistry in 1954 and Peace in 1962 D) Physics in 1903 and Chemistry in 1911
 
Answer & Explanation Answer: A) Chemistry in 1958 and 1980

Explanation:
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Filed Under: General Awareness

Q:

The least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is

A) 1677 B) 1683
C) 2523 D) 3363
 
Answer & Explanation Answer: B) 1683

Explanation:

 L.C.M of 5, 6, 7, 8 = 840

 

Therefore, Required Number is of the form 840k+3.

 

Least value of k for which (840k+3) is divisible by 9 is k = 2 

 

Therefore, Required  Number = (840 x 2+3)=1683

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Filed Under: HCF and LCM

Q:

Who Invented Piano ?

A) Bartolomeo Cristofori di Francesco B) Ruth Graves Wakefield
C) Adolf Gaston Eugen Fick D) Jacques Cousteau
 
Answer & Explanation Answer: A) Bartolomeo Cristofori di Francesco

Explanation:
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Filed Under: Inventions

Q:

Which of the folowing is not a true snake?

A) Glass snake B) Sea Snake
C) Tree Snake D) Blind Snake
 
Answer & Explanation Answer: A) Glass snake

Explanation:

Glass Snake is a liZard.

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Filed Under: Animals and Birds

Q:

In which of the following kinds of organism is the phenomenon found wherein the female kills the male after copulation

A) Dragonfly B) Honeybee
C) Spider D) Pit viper
 
Answer & Explanation Answer: B) Honeybee

Explanation:
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Filed Under: Animals and Birds

Q:

For How many years have the dinosaurs been extinct?

A) About 25 million years B) About 65 million years
C) About 100 million years D) About 135 million years
 
Answer & Explanation Answer: B) About 65 million years

Explanation:
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Filed Under: Animals and Birds

Q:

A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the begining and 100 more  after 35 days and completes the work in stipulated time. If he had not  engaged  the additional men, how many days  behind schedule would it be finished?

A) 3 B) 5
C) 6 D) 9
 
Answer & Explanation Answer: B) 5

Explanation:

[(100 x 35) + (200 x 5)]men can finish the work in 1 day 

Therefore, 4500 men can finish the work in 1 day. 100 men can finish it in  4500/100= 45 days.

This is 5 days behind Schedule

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Filed Under: Chain Rule