Logical Reasoning - Number Series - Discussion
Discussion Forum : Number Series - Type 1 (Q.No. 17)
Directions to Solve
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much
17.
Look at this series: 2, 6, 18, 54, ... What number should come next?
Answer: Option
Explanation:
This is a simple multiplication series. Each number is 3 times more than the previous number.
Discussion:
41 comments Page 3 of 5.
Alisha said:
10 years ago
2*(3^0)*3 = 6.
2*(3^1)*3 = 18.
2*(3^2)*3 = 54.
2*(3^3)*3 = 162.
Answer: 162
2*(3^1)*3 = 18.
2*(3^2)*3 = 54.
2*(3^3)*3 = 162.
Answer: 162
(1)
Varun said:
10 years ago
Very easy multiply with 3.
2*3 = 6.
6*3 = 18.
18*3= 54.
54*3 = 162.
So answer is 162.
2*3 = 6.
6*3 = 18.
18*3= 54.
54*3 = 162.
So answer is 162.
Poonam said:
10 years ago
Multiply first by 2 and add to original number and the multiplied answer:
2*2=4; 2+4=6.
6*2=12; 6+12=18.
18*2=36; 18+36=54.
54*2=128; 128 + 54=Answer.
2*2=4; 2+4=6.
6*2=12; 6+12=18.
18*2=36; 18+36=54.
54*2=128; 128 + 54=Answer.
GAGAN said:
1 decade ago
Thanks for help.
Dinesh bijarniya said:
1 decade ago
Difference between 2 and 6 = 4.
Difference between 6 and 18 = 12.
Difference between 18 and 54 = 36.
Next number = 4x3=12, 12x3=36, 36x3=108.
Next number = 54 + 108 = 162.
Difference between 6 and 18 = 12.
Difference between 18 and 54 = 36.
Next number = 4x3=12, 12x3=36, 36x3=108.
Next number = 54 + 108 = 162.
PATEL VIKI A said:
1 decade ago
Second answer is,
First series 2 & 18 & 162... is multiply by 9.
2*9=18.
18*9=162.
And second series 6 & 54 &
6*9 = 54.
54*9 = 486.
ANS = 2 6 18 54 162 486..
First series 2 & 18 & 162... is multiply by 9.
2*9=18.
18*9=162.
And second series 6 & 54 &
6*9 = 54.
54*9 = 486.
ANS = 2 6 18 54 162 486..
Angel said:
1 decade ago
First no is multiplied by 3 to get the next no.
So our answer is 54*3=162.
So our answer is 54*3=162.
Kiran said:
1 decade ago
Rule.
02 + 4*(3^0) = 6.
06 + 4*(3^1) = 18.
18 + 4*(3^2) = 54.
54 + 4*(3^3) = 108 ?
02 + 4*(3^0) = 6.
06 + 4*(3^1) = 18.
18 + 4*(3^2) = 54.
54 + 4*(3^3) = 108 ?
Prince Rambade said:
1 decade ago
Why not this can follow this rule.
02 + 4*(3^0) = 6.
06 + 4*(3^1) = 18.
18 + 4*(3^2) = 54.
54 + 4*(3^3) = 108 ?
This can also be possible. isn't it ?
02 + 4*(3^0) = 6.
06 + 4*(3^1) = 18.
18 + 4*(3^2) = 54.
54 + 4*(3^3) = 108 ?
This can also be possible. isn't it ?
Swapnil said:
1 decade ago
It can also be like this:
Series:- 2, 6, 18, 54..
2*1=2.
2*3=6 So 3+6=9.
2*9=18 So 9+18=27.
2*27=54 So 54+27=81.
2*81=162.
Series:- 2, 6, 18, 54..
2*1=2.
2*3=6 So 3+6=9.
2*9=18 So 9+18=27.
2*27=54 So 54+27=81.
2*81=162.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers