GATE Questions

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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Q:

What has 4 Eyes But cannot see?

Answer

What has 4 Eyes But cannot see is Mississippi.


The wording of Mississippi has 4 'i''s. But it can't see.

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Subject: Word Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
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Q:

Tubes that bifurcate from the windpipe

A) Bronchi B) pleura
C) Apex D) Adenoids
 
Answer & Explanation Answer: A) Bronchi

Explanation:

Tubes that bifurcate from the windpipe are called Bronchi.

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Filed Under: Biology
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1 2933
Q:

Which of the following is a hydrocarbon?

A) C2H6 B) C3H8
C) CH4 D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons.

Here all the given options are hydrocarbons.

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Filed Under: Chemistry
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0 2931
Q:

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = ?

A) 0 B) 2
C) 12 D) 10
 
Answer & Explanation Answer: C) 12

Explanation:

Given 

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1

Using BODMAS Rule,

As multiplication precedes addition, 1 x 0 = 0, 

Now, 10 + 0 + 1 + 1 = 10 + 2 = 12.

 

Hence, 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = 12.

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Filed Under: Problems on Numbers
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6 2930
Q:

Particles of matter are continuously moving.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Yes, in any matter the particles are always moving. But the speed of the particles moving sepends on the temperature. As temperature increases, the speed of the particles also increases.

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Subject: General Science
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0 2929
Q:

The amount of water vapor in the air is called

A) Saturated air B) Precipitation
C) Humidity D) Capacity
 
Answer & Explanation Answer: C) Humidity

Explanation:

The amount of water vapor in the air is called Humidity. The amount of water vapor that air acn hold depends on the temperature of the air. The amount of water vapor in the air as compared with the amount of water that the air could hold is called Relative humidity.

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Filed Under: General Science
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4 2927
Q:

An ecosystem consists of

A) all the plants and animals of an area B) producers, consumers, and decomposers in a particular locality
C) a living community and its environment D) carnivores and herbivores of an area
 
Answer & Explanation Answer: C) a living community and its environment

Explanation:

A living community and its environment is what an ecosystem is.

An_ecosystem_consists_of1535781515.jpg image

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