# Mathematical Reasoning MCQ - Mathematical Reasoning

1:

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

 A. 5 B. 4 C. 16 D. 8 Answer Report Discuss Option: D Explanation : 1,2,3,12,22,32,13,23,33 Click on Discuss to view users comments. geeta said: (10:27pm on Wednesday 15th May 2013) how the answer 8 comes rahul said: (7:35pm 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: (7:35pm 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: (11:12pm on Wednesday 12th June 2013) Boss answer is 16 not 8 aswini said: (8:39pm on Monday 3rd March 2014) Answer is 8 saroj said: (6:23pm on Wednesday 21st September 2016) 8 Write your comments here:
2:

3,5, 9,17,33

 A. 44 B. 65 C. 64 D. 49 Answer Report Discuss 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  Click on Discuss to view users comments. Diamond said: (9:17am 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: (6:07am 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... Write your comments here:
3:

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

 A. 155 B. 160 C. 170 D. 175 Answer Report Discuss 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 Click on Discuss to view users comments. tejinder said: (4:26pm on Saturday 7th September 2013) answer is right but explanation is wrong because 6th term=4th*7 not 5th term Jayeeta said: (7:32am on Saturday 28th April 2018) now i get it okay so this is if 24*6=144 then 25*7=smthng the answer comes Write your comments here:
4:

128,64,32...?

 A. 33 B. 35 C. 45 D. 16 Answer Report Discuss 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 Click on Discuss to view users comments. PK said: (4:26pm 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: (9:18am on Wednesday 15th November 2017) It is all being divided by 2 Write your comments here:
5:

A.

B.
C.
D.

Option: A

Explanation :

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