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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Subject: Number Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

In a certain code language, "PEPPER" is written as "@#@@#!" and "AIM" is written as "^?*". How is "PAMPER" written in that code language?

A) @^*@#! B) @*^@#!
C) @^*#@! D) @^*@!#
 
Answer & Explanation Answer: A) @^*@#!

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

Which of the following Indian Universities has topped the list of country's official higher education rankings, recently announced by the HRD Ministry ? 

A) Jawaharlal Nehru University B) Banaras Hindu University
C) IISc-Bengaluru D) Delhi University
 
Answer & Explanation Answer: C) IISc-Bengaluru

Explanation:

The Indian Institute of Sciences (IISc)- Bengaluru has topped the list of best universities of country's official higher education rankings, recently announced by the HRD Ministry.

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Filed Under: General Awareness
Exam Prep: Bank Exams
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Q:

Statement: There was a spurt in criminal activities in the city during the recent festival season.
Courses of action:
a. The police should immediately investigate into the causes of this increase.
b. In future the police should take adequate precaution to avoid recurrence of such situation during festival.
c. The known criminals should be arrested before any such season.

A) Both a and b follows B) Only c follows
C) Only a follows D) Both b and c follows
 
Answer & Explanation Answer: A) Both a and b follows

Explanation:

The police ought to find out the lackenings in existing security arrangements and make up for these inadequacies to strengthen security and thus prevent criminal activities in the forthcoming festival. So, both a and b follow. Arresting the known criminals does not ensure safety, for a novice can also indulge in crime. So, c does not follow.

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Filed Under: Statement and Courses of Action
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Q:

The Hollong Modular Gas Processing Plant (HMGPP), which is in news recently, is located in which state?

A) Haryana B) Uttar Pradesh
C) Assam D) Arunachal Pradesh
 
Answer & Explanation Answer: C) Assam

Explanation:
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Filed Under: Indian Geography
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Q:

Synchronous motor can operate at

A) Lagging power factor only B) Unity power factor only
C) Leading power factor only D) At any power factor
 
Answer & Explanation Answer: D) At any power factor

Explanation:

synchronous motor can operate at lag lead and unity power factor also why because it is mainly depends on excitation

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Filed Under: General Awareness
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Q:

Analog computer works on the supply of

A) Magnetic strength B) Continuous electrical pulses
C) Discontinuous electrical pulses D) None of the above
 
Answer & Explanation Answer: B) Continuous electrical pulses

Explanation:

Analog_computer_works_on_the_supply_of1557395703.jpg image

An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved.

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Filed Under: Computer
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Q:

Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?

A) 200 nm and 500 nm B) 500 nm and 1000 nm
C) 500 nm only D) 200 nm and 1000 nm
 
Answer & Explanation Answer: C) 500 nm only

Explanation:
Visual image of human eye is 390-700 nanometer. So, approximate value is 500 nanometer only.
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Filed Under: Physics
Exam Prep: Bank Exams

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