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
50
26
37
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 1 of 5.

Sanjeevani tiwari said:   6 years ago
The difference are odd.

5-2=3
10-5=5
17-10=7
26-17=9
37-26=11
50-37=13

But 64-50=14 which is not an odd number.
(25)

Kalyan said:   6 years ago
2, 5, 10, 17, 26, 37, 50, 64.

The difference between two numbers
3 5 7 9 11 13 15.

3+2=5,
5+5=10, 7
+10=17,
9+17=26,
11+26=37,
13+37=50,
15+50=65.

According to this sequence, we get 65, so 64 is not matching.
(9)

SANAL said:   5 years ago
Simply 64 is only a perfect square. So, 64 is the answer.
(8)

Jobina said:   6 years ago
The numbers alternatively are even and odd except 64.
(5)

Jethalal said:   5 years ago
Yes right, Thanks @Sanjeevani Tiwari.
(1)

Deepak said:   7 years ago
Logis is adding odd number 3, 5, 7, 9, 11, 13, ....
(1)

Akhil said:   7 years ago
@All.

As per my logic;

2+3=5, 5+5=10, 10+7=17, 17+9=26, 26+11=37, 37+13=50, 50+15=65.
(1)

Subin said:   7 years ago
I got another solution.
It's an alternate even-odd series..
2=even,
5=odd,
10=even,
17=odd,
26=even,
37=odd,
50=even,
64=should've been an odd no. but its not.

So, 64 is the answer.
(1)

Rachna said:   1 decade ago
37 can be the right answer because it is odd digit.

Dayanand said:   1 decade ago
2+2+1 = 5.
5+4+1 = 10.
10+6+1 = 17.
17+8+1 = 26.
26+10+1 = 37.
37+12+1 = 50.
50+14+1 = 65.


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