GATE Questions

Q:

In a bag, there are 8 red, 7 blue and 6 green flowers. One of the flower is picked up randomly. What is the probability that it is neither red nor green ?

A) 13

B)821

C)621

D)2021

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

Explanation:

Total number of flowers = (8+7+6) = 21.

 

Let E = event that the flower drawn is neither red nor green. 

= event taht the flower drawn is blue. 

 

--> n(E)= 7 

--> P(E)=  721=13 

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Filed Under: Permutations and Combinations
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8 3237
Q:

Ketchup stored in a tin can may lead to chemical contamination.

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

Explanation:

The given statement is True.


Ketchup is acidic, having a pH of 3.9. The acidic component, acetic acid, will react with the metal tin. This reaction will result in a metal acetate that will contaminate the ketchup.


 


Hence, The acetic acid in the ketchup will react with the metal tin, forming a metal acetate that will pass into the ketchup which leads to its contamination.

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Subject: Chemistry
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2 3237
Q:

Express 3/8 and 1/10 as a Decimals?

A) 1.375 & 1 B) 0.375 & 1
C) 13.75 & 1.1 D) 0.375 & 0.1
 
Answer & Explanation Answer: D) 0.375 & 0.1

Explanation:

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

=> 3 x 1258 x 125 = 3751000 = 0.375

 

1/10 as a Decimal :

1 divided into 10 parts of each 0.1.

 

Therefore, 3/8 = 0.375 and 1/10 = 0.1 in decimals.

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Filed Under: Decimal Fractions
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3 3236
Q:

Who is known as the Father of Geometry?

A) Aryabhata B) Thales of Miletus
C) Pythagoras of Samos D) Euclid
 
Answer & Explanation Answer: D) Euclid

Explanation:

Euclid of Alexandria was a Greek mathematician, often referred to as the Father of Geometry.

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Filed Under: General Awareness
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2 3232
Q:

What is the distance around a shape called?

A) Volume B) Area
C) Mass D) Perimeter
 
Answer & Explanation Answer: D) Perimeter

Explanation:

The distance around a shape or figure I called Perimeter. A perimeter is a path that surrounds a two-dimensional shape.

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Q:

In the given number series which follows the definite rules then find out the value of (M, N, O, and P) in second number series.

7  18  42  94  204

4   M   N    O     P

What value will come in place of P?

A) 179 B) 184
C) 164 D) 156
 
Answer & Explanation Answer: D) 156

Explanation:

Here the given series 7  18  42  94  204 follows a pattern that, 

7

×2+4 = 18

18 ×2+6 = 42

42 ×2+10 = 94

94 ×2+16 = 204

Similarly,

4

×2+4 = 12

12 ×2+6 = 30

30 ×2+10 = 70

70 ×2+16 = 156

Hence, the value of P = 156.

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Filed Under: Odd Man Out
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8 3228
Q:

I am always infront of you, but you will never see me. Who am I?

A) Mirror B) Shadow
C) Future D) None of the above
 
Answer & Explanation Answer: C) Future

Explanation:

Yes, future is always infront of us, but no one can see it.

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3 3225
Q:

Which superhero shares a name with a town in Turkey?

A) Batman B) Spiderman
C) Ironman D) None of the above
 
Answer & Explanation Answer: A) Batman

Explanation:

Superhero Batman shares a name with an oil production Batman, a town in Turkey.

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