GATE Questions

Q:

Give the common name for the following compound

CH32CH CH2 - Br

A) Isobutyl bromide B) Methyl bromide
C) Propyl bromide D) Butyl bromide
 
Answer & Explanation Answer: A) Isobutyl bromide

Explanation:
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7 52184
Q:

What is the next letter of the following sequence.


N , O , M , P , L , Q , K , R , ?

A) S B) I
C) J D) T
 
Answer & Explanation Answer: C) J

Explanation:

Here the series has mixed two series.
n m l k...! reverse alphabet
o p q r ...! forward alphabet
So the letter before k is j and after that letter after r is s and so on...

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15 52178
Q:

56% of 225 + 20% of 150 = ? - 109

 

Find the value of '?' in the above equation

A) 264 B) 220
C) 241 D) None
 
Answer & Explanation Answer: A) 264

Explanation:

Given 56% of 225 + 20% of 150 = ? - 109

we know that a% of b = b% of a

Now,

225% of 56 + 20% of 150 = ? - 109

200% of 56 + 25% of 56 + 20% of 150 = ? - 109

112 + 14 + 30 = ? - 109

? = 112 + 14 + 30 + 109

? = 264

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28 52124
Q:

What number should replace the question mark?

125, 138, 164, ?, 255

A) 189 B) 197
C) 200 D) 203
 
Answer & Explanation Answer: D) 203

Explanation:

The given number series is 125,   138,   164,   ?,   255

 

125

 

125 + 13x1 = 138

 

138 + 13x2 = 164

 

164 + 13x3 = 203

 

203 + 13x4 = 255

 

 

 

Hence, the missing number in the series is 203.

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5 52101
Q:

What value will come in place of question mark (?) in the number - series given below  ? 

4, 30, ?, 1440, 7195, 71940

A) 145 B) 545
C) 650 D) 999
 
Answer & Explanation Answer: A) 145

Explanation:

4       30       ?     1440       7195      71940

 

Here the given series follows a pattern of

 

4

 

4 x 10 - 10 = 30

 

30 x 5 - 5  = 145

 

145 x 10 - 10 = 1440

 

1440 x 5 - 5 = 7195

 

7195 x 10 - 10 = 71940

 

Hence, the missing number is 145

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9 51626
Q:

Fill in the blanks with suitable prepositions from the given options.


The dog was sitting _______ the table waiting _______ catch the ball that was thrown ________ him _________ his master.

A) below, for, to, by B) under, for, towards, by
C) up, to, towards, by D) under, to, towards, by
 
Answer & Explanation Answer: D) under, to, towards, by

Explanation:

The dog was sitting under the table waiting to catch the ball that was thrown towards him by his master.

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Filed Under: Analogy
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15 51584
Q:

How much time will take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest  ?

A) 4 years B) 2.5 years
C) 3.5 years D) 2 years
 
Answer & Explanation Answer: A) 4 years

Explanation:

Time = (100 x 81) / (450 x 4.5) = 4 years.

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Filed Under: Simple Interest
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107 51167
Q:

They come out at night without being called and are lost in the day without being stolen. What are they?

A) Light B) Bats
C) Stars D) Flights
 
Answer & Explanation Answer: C) Stars

Explanation:

Stars are what that come out at night without being called and are lost in the day without being stolen.

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