Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Odd Man Out (Q.No. 8)
Directions to Solve
Find the odd man out.
8.
2, 5, 10, 17, 26, 37, 50, 64
Answer: Option
Explanation:
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
Discussion:
48 comments Page 5 of 5.
Rsh said:
1 decade ago
The difference between each of them is odd no that is
2+3=5
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=64
But there is no 65 and there is 64. So answer is 64.
2+3=5
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=64
But there is no 65 and there is 64. So answer is 64.
Dipanshu said:
1 decade ago
Here series of odd no. is added in given no..
like
2+(3)=5
5+(5)=10
10+(7)=17
17+(9)=26
26+(11)=37
37+(13)=50
but 50+15=65
here is 64 so odd no. in this series is 64.....
answer is 64;
like
2+(3)=5
5+(5)=10
10+(7)=17
17+(9)=26
26+(11)=37
37+(13)=50
but 50+15=65
here is 64 so odd no. in this series is 64.....
answer is 64;
Teenu said:
1 decade ago
Each number must be added by preceeding odd number
0+2=2
2+3=5
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=65
Therefore 64 is odd
0+2=2
2+3=5
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=65
Therefore 64 is odd
Sourav Bhadra said:
1 decade ago
1+3=5
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=65 not 64...
(3-5-7-9-11-13-15) 64 is odd
5+5=10
10+7=17
17+9=26
26+11=37
37+13=50
50+15=65 not 64...
(3-5-7-9-11-13-15) 64 is odd
Vikram said:
1 decade ago
Here we can easily subtract the 2 numbers and the difference should be ordered by 3, 5, 7, 9, 11, 13, 15, 17. Like that'but the number 64 is exempted from this case.
Ankita sood said:
1 decade ago
general term :
tn = t(n-1) + 2n-1 where n = 2,3,4,5...
t= 2
t1= 2 + 2(2)-1 = 5
t2= 5 + 2(3)-1 = 10
t3= 10 + 2(4)-1 = 17.... and so on where 64 is out of pattern
tn = t(n-1) + 2n-1 where n = 2,3,4,5...
t= 2
t1= 2 + 2(2)-1 = 5
t2= 5 + 2(3)-1 = 10
t3= 10 + 2(4)-1 = 17.... and so on where 64 is out of pattern
Vidhya said:
2 decades ago
also series that is obtained after subtracting evry proceeding no. from the previous increases by two
Nishith said:
2 decades ago
Also 64 is the only perfect square and rest are not.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers