Bank Exams Questions

Q:

The average age of Hari, his wife and their two children is 23 years. His wife is just 4 years younger than Hari and his wife was 20 years old when their daughter was born. He was 28 years old when their son was born. What is the sum of the age of Hari and his daughter is?

A) 53 years B) 55 years
C) 56 years D) 50 years
 
Answer & Explanation Answer: D) 50 years

Explanation:
H+W+S+D/4 = 23
H= W+4

D =W-20 = H-24

S = H-28

H+H-4+H-24+H-28/4 = 23

H =37 D =13

H + D = 50

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Which of the following can be a cause of fratricide?

A) Clearance of Fires Error B) Fatal Navigation Error
C) Failures in the direct fire control plan D) All of the above
 
Answer & Explanation Answer: C) Failures in the direct fire control plan

Explanation:

Fratricide means the accidental killing of one's own forces in war.

 

Failures in the direct fire control plan can lead to be a cause of fratricide.

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Filed Under: General Science
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Q:

Which of the following mixtures is not a colloid?

A) Sugar water B) Milk
C) Paint D) Fog
 
Answer & Explanation Answer: A) Sugar water

Explanation:

Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.

These Colloid substances consists of ultramicroscopic particles of one substance dispersed through another substance from which we cannot separate them.

 

Sugar water is not a colloid and it is a solution in which we can separate them.

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Filed Under: Chemistry
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Q:

Which memory needs refresh?

A) DRAM B) SRAM
C) ROM D) All of the above
 
Answer & Explanation Answer: A) DRAM

Explanation:

Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information.

DRAM1532669979.png image

Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random-access memory (DRAM), the most widely used type of computer memory.

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Q:

A push or pull on an object is called

A) Force B) Weight
C) Opposition D) None of the above
 
Answer & Explanation Answer: A) Force

Explanation:

The push or pull on an object that causes it to move or stop or change direction is called as Force.

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Filed Under: General Science
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Q:

Diagrammatic representation of data includes which of the following?

1) Bar diagram

2) Pie-diagram

3) Pictogram

Select the correct answer using the code given below:

 

A) 1 and 2 only B) 2 and 3 only
C) 1 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

Explanation:
All three are types of data representation
Pictogram uses pictures so show different identities with different numbers
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Q:

If the mean of m observations out of n observations is n and the mean of remaining observations is m, then what is the mean of all n observations?

A) 2m –m^2/n B) 2m –m/n
C) 2m D) 2m –m
 
Answer & Explanation Answer: A) 2m –m^2/n

Explanation:

Mean of m observations is n

Mean of n-m observations is m

So total = nm+ (n-m)m

Total observations = n

Mean = Total / Total observations = (2mn-m^2)/n = 2m –m^2/n

 

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The rate of flow of electric charge is measured in

A) ampere B) coulomb
C) ampere/coulomb D) ampere-coulomb
 
Answer & Explanation Answer: A) ampere

Explanation:
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Filed Under: Physics
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