Classical

Mathematical Reasoning MCQ - Mathematical Reasoning

1:  

1,2,3,1,4,9,1,...27

A.

5

B.

4

C.

16

D.

8

 
 

Option: D

Explanation :

1,2,3,12,22,32,13,23,33

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geeta said: (1:27am on Thursday 16th May 2013)
how the answer 8 comes
rahul said: (10:35pm on Monday 3rd June 2013)
first 3(1,2,3) is simple no.2nd three(1,4,9) is square of 1,2,
rahul said: (10:35pm on Monday 3rd June 2013)
first 3(1,2,3) is simple no.2nd three(1,4,9) is square of 1,2,
Arun said: (2:12am on Thursday 13th June 2013)
Boss answer is 16 not 8
aswini said: (10:39pm on Monday 3rd March 2014)
Answer is 8
saroj said: (9:23pm on Wednesday 21st September 2016)
8

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2:  

3,5, 9,17,33

A.

44

B.

65

C.

64

D.

49

 
 

Option: B

Explanation :

The difference between the two consecutive terms are doubling and 1 is added 
3,5, 9,17,33
2+1=3
2*2=4, 4+1=5
4*2=8, 8+1=9
8*2=16, 16+1=17
16*2=32, 32+1=33
32*2=64, 64+1=65 

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Diamond said: (11:17am on Wednesday 15th November 2017)
3 2=5, 5 4=9, 9 8=17, 17 16=33, So since it is doubling I did 33 32 and that equals 65
anchel said: (8:07am on Tuesday 20th February 2018)
i multiplied each digit with two n then subtracted 1 from the resulting figure. i.e 3x2=6-1=5 , 5x2=10 10-1=9 n so on...

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3:  

6,5,24,25,144,(?)

A.

155

B.

160

C.

170

D.

175

 
 

Option: D

Explanation :

IIIrd term is=Ist termx4,i.e.,6x4=24
IVth term is =IInd term x 5,i.e,5x5=25
Vth term is = IVth termx7,i.e.,25x7=175
Multipliers are in the increasing order of 4,5,6,7, etc

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tejinder said: (7:26pm on Saturday 7th September 2013)
answer is right but explanation is wrong because 6th term=4th*7 not 5th term
Jayeeta said: (10:32am on Saturday 28th April 2018)
now i get it okay so this is if 24*6=144 then 25*7=smthng the answer comes

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4:  

128,64,32...?

A.

33

B.

35

C.

45

D.

16

 
 

Option: D

Explanation :

16*2=32,     32*2=64,         64*2=128
Now in reverse 128/2=64,         64/2=32      so 32/2=16

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PK said: (6:26pm on Friday 15th February 2013)
16*2=32,32*2=64,64*2=128 now in reverse 128/2=64,64/2=32 so 32/2=6
Diamond said: (11:18am on Wednesday 15th November 2017)
It is all being divided by 2

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5:  

For more questions  on mathematical reasoning click here

A.

ICT Questions for NET Paper1
 Click Here

B.
C.
D.
 
 

Option: A

Explanation :

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