GATE Questions

Q:

Not including the sun, the closest stars to earth are

A) 4300 light-years away B) 430 light-years away
C) 43 light-years away D) 4.3 light-years away
 
Answer & Explanation Answer: D) 4.3 light-years away

Explanation:

The nearest stars to Earth are in the Alpha Centauri triple-star system, about 4.37 light-years away. One of these stars, Proxima Centauri, is slightly closer, at 4.26 light-years.

 

Of all the stars closer than 15 light-years, only two are spectral type G, similar to our sun: Alpha Centauri A and Tau Ceti. The majority are M-type red dwarf stars.

 

Only nine of the stars in this area is bright enough to be seen by the naked human eye from Earth. These brightest stars include Alpha Centauri A and B, Sirius A, Epsilon Eridani, Procyon, 61 Cygni A and B, Epsilon Indi A and Tau Ceti.

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Q:

If everyone on the team is a veteran, what will you do to fit in ?

Answer

This answer shows steps of becoming a team member that doesn't appear to be in training. It is describing ways to limit training times in meetings, and include that a new worker could benefit an existing team by making a list of ideas.


Even if everyone is a veteran, I feel confident I can fit right in. I would prepare as much as I can by reading existing material to catch up on the project. I would plan for meetings by making a list of questions I have and finding the answers to these questions before the meeting. I would also create a list of ideas through the documents I have read. A fresh mind could help with creative solutions. I know that I would be required to study a lot in the beginning, but I would be able to do so at home or by working late in the office.

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Q:

In a class there are certain no. of boys and girls. If 15 girls are absent then no. of boys will be twice that of girls. If 45 boys are absent then girls strength will be 5 times that of boys. Find number of boys actually present ?

A) 40 B) 50
C) 55 D) 35
 
Answer & Explanation Answer: B) 50

Explanation:

15 girls are absent => b = 2(g-15)...... eqn...(1)

45 boys are absent => g - 15 = 5(b-45).....eqn...(2)

=> g = 5(b-45) + 15

=> b = 2((5(b-45)+15)-15)

=> b = 2(5b - 225 + 15 - 15)

=> b = 2(5b-225)

=> b = 10b - 450

=> 9b = 450

=> b = 50

so from equation(2)

g - 15 = 5(b - 45)

=> g - 15 = 5(50-45)

=> g - 15 = 5(5)

=> g = 25 + 15

=> g = 40

Therefore, the number of boys = 50 and girls = 40

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Filed Under: Arithmetical Reasoning
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2 3988
Q:

Persistence of vision is the principle behind

A) Telescope B) Periscope
C) Cinema D) Microscope
 
Answer & Explanation Answer: C) Cinema

Explanation:

Optical illusion is what that refers to persistence of vision with a principle that multiple images blend into a single image in human mind and what is showed in cinema.

 

Hence, Persistence of vision is the principle behind cinema.

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Filed Under: Physics
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0 3986
Q:

Name another word for friend?

A) playfellow B) enemy
C) rival D) foe
 
Answer & Explanation Answer: A) playfellow

Explanation:

Friend is a person with whom one has a bond of mutual affection, typically one exclusive of sexual or family relations.

 

Other names for friend are mate, bosom friend, classmate, buddy, ally,...

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Filed Under: English
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Q:

Which of the following fraction is the largest?

A) 7/12 B) 9/16
C) 13/20 D) 32/80
 
Answer & Explanation Answer: A) 7/12

Explanation:

Here to say which fraction is greater from the given options, the fraction with greater numerator with same denominator or smaller denominator with same numerator.

To find the greater fraction, among the given options, make the denominators same for the options by finding the LCM of all the denominators.

7/12, 9/16, 13/20, 32/80

Now, LCM of 12, 16, 20, 80 = 240.

Then,

140/240, 135/240, 156/240, 96/240

Here 

156240 > 140240 > 135240 > 96240=> 1320 > 712 > 916 > 3280

 

Hence, largest fraction = 13/20.

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Filed Under: Decimal Fractions
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Q:

In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with remaining meal ?

A) 40 B) 30
C) 50 D) 25
 
Answer & Explanation Answer: B) 30

Explanation:

Here given 120 men = 200 children

therefore 1 child = 3/5 of Man------ step I

Now given that the food was consumed by 150 children

From step I we get 150 children =90 Men ( 1 child = 3/5 Man ie , 150 X 3/5 = 90)
So the food is for (120-90) men = 30 Men

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Q:

What are the Multiples of 18?

A) 144 B) 72
C) 306 D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

The Multiples of 18 are 18, 36, 54, 72, 90, 108, 126, ....

 

  • Multiples of 18 are nothing but numbers which are divisible by 18 leaving remainder 0.

 

  • An infinite number of multiples of 18 can be achieved by adding 18 to each subsequent multiple.
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