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Q:

3x3x3+3+3/3 = ?

A) 11 B) 3.33
C) 31 D) None of the above
 
Answer & Explanation Answer: C) 31

Explanation:

We all know about BODMAS rule, by using that

3x3x3+3+3/3

= 3x3x3+3+1

= 27+3+1

= 27 + 4

= 31

 

Hence,  3x3x3+3+3/3 = 31.

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Filed Under: Arithmetical Reasoning
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3 1570
Q:

If yesterday were tomorrow, then today would be Friday. What day is today?

A) Saturday B) Monday
C) Sunday D) Tuesday
 
Answer & Explanation Answer: C) Sunday

Explanation:

If yesterday were tomorrow, today is Friday => tomorrow of friday is Saturday.

 

Hence, it implies that today is Sunday if tomorrow is Saturday.

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Filed Under: Calendar
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83 11323
Q:

What is the value of 100P2 ?

A) 10000 B) 9900
C) 8900 D) 7900
 
Answer & Explanation Answer: B) 9900

Explanation:

Here in 100P2, P says that permutations and is defined as in how many ways 2 objects can be selected from 100 and can be arranged.

 

That can be done as,

 

100 P2  = 100!/(100 - 2)!

= 100 x 99 x 98!/98!

= 100 x 99 

= 9900.

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Filed Under: Permutations and Combinations
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7 5616
Q:

A train travels 360 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less for the same journey. Find the speed of the train?
     

A) 42 kmph B) 43 kmph
C) 40 kmph D) 45 kmph
 
Answer & Explanation Answer: C) 40 kmph

Explanation:

We know that,  Speed = Distance/time

 

Let the speed of the train be = x kmph

           NORMAL SPEED                           SPEED 5 KMPH MORE

          Distance = 360 Km                         Distance =360
 
          speed    =  X Kmph                        Speed = (x+5)
 
            Time =360/X                              Time =360/(x+15)
          

 

For the same journey if the speed increased 10 kmph more it will take 1 hour less

 


Time with original speed - time with increased speed = 1

 => (360/x) - (360/x+10) =  1                               

 =>  (360(x+5)-360x)/x(x+5) =1

 =>   360X + 1800 -360X  = X(X+5)

  =>   X^2 + 5x - 1800 = 0

  X = 40 or -45

 X cannot be negetive value
                  

 X = 40 kmph.

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Filed Under: Problems on Trains
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4 1916
Q:

H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 24 x 35 x 52 x 72 . What is the third number?

A) 47628 B) 49874
C) 24157 D) 42146
 
Answer & Explanation Answer: A) 47628

Explanation:

hcf_of_three_numbers_3240,_3600_and_third_number_is_361542439249.jpg image

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Filed Under: HCF and LCM
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17 6402
Q:

Mount Damavand is the highest peak in

A) Iraq B) Papua New Guinea
C) Oman D) Iran
 
Answer & Explanation Answer: D) Iran

Explanation:

Mount Damavand is the highest peak in Iran and also a potentially active volcano.

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Filed Under: World Geography
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1 952
Q:

Which city is the venue of the Women's World Boxing Championships 2018?

A) Pune B) New Delhi
C) Patna D) Hyderabad
 
Answer & Explanation Answer: B) New Delhi

Explanation:

New Delhi is the venue of the Women's World Boxing Championships 2018 started from Nov 15 to Nov 24.

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Filed Under: General Awareness
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0 1210
Q:

Which state police has launched e-learning portal 'Nipun' for training its personnel?

A) Delhi B) Uttar Pradesh
C) Telangana D) Maharashtra
 
Answer & Explanation Answer: A) Delhi

Explanation:

Delhi state police has launched e-learning portal 'Nipun' for training all its police officers to give up to date information through specialized courses designed by experts.

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Filed Under: General Awareness
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2 1416