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Q:

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?

A) 30/11 B) 60/11
C) 120/11 D) 90/11
 
Answer & Explanation Answer: A) 30/11

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Filed Under: Pipes and Cistern
Exam Prep: Bank Exams

Q:

 

The given figures depict the country-wise distribution of the people who visit China for business setup.

 

If in a given year, 500000 people visited China, then the ratio of the number of Americans with the age group between 20 and 40 years to the Russians with the age group below 20 years who visited China is

A) 4:1 B) 1:2
C) 2:1 D) 1:4
 
Answer & Explanation Answer: A) 4:1

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Filed Under: Pie Charts
Exam Prep: Bank Exams

Q:

Which of the given Answer Figures is embedded in the given Problem Figure?

 

 

A) B B) D
C) C D) A
 
Answer & Explanation Answer: A) B

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Filed Under: Image Analysis
Exam Prep: Bank Exams

Q:

Which of the following statements is/are INCORRECT?

 

A. The value of G on the moon is equal to that on the earth.

B. 26.68 x 10-11 N is the force of gravitation between two point masses of 2 kg and 2kg kept 1 m apart.

C. Newton's law of gravitation is valid in the laboratory only.

D. Force is inversely proportional to the square of the distance between two bodies.

 

A) B, C and D B) C and D only
C) Only C D) Only A
 
Answer & Explanation Answer: C) Only C

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Filed Under: Physics
Exam Prep: Bank Exams

Q:

Calculate the current flowing through a resistor of 10 ohm when a potential difference of 140 v is applied across it.

A) 14 amp B) 140 amp
C) 1400 amp D) 1.4 amp
 
Answer & Explanation Answer: A) 14 amp

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Filed Under: Physics
Exam Prep: Bank Exams

Q:

∆DEF is right angled at E. If m∠F = 60 deg, then find the value of (cotD - 2/√3).

 

A) 1 - √2 B) 1/√3
C) (2 - √3)/2√3 D) (2 - 2√3)/√3
 
Answer & Explanation Answer: B) 1/√3

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

Shivam is 10% less efficient than Vivek. If Vivek can make a helmet in 9 days, then in how many days Shivam can complete the same work?

 

A) 15 B) 12
C) 10 D) 8
 
Answer & Explanation Answer: C) 10

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Filed Under: Time and Work
Exam Prep: Bank Exams

Q:

The marked price of an article is Rs 2400. It is sold at two successive discounts of 10% and 15%. What is the selling price (in Rs) of the article?

 

A) 1836 B) 1924
C) 1848 D) 1976
 
Answer & Explanation Answer: A) 1836

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Filed Under: Percentage
Exam Prep: Bank Exams