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.
Manjukavi said:
1 decade ago
Mainly 2 methods.
1) 64 only a perfect square.
2) Difference between 2&5 is 3.
Difference between 5&10 is 5.
Difference between 10&17 is 7.
Difference between 17&26 is 9.
Difference between 26&37 is 11.
Difference between 37&50 is 13.
Difference between 50&64 is 14 (even).
So 64 is correct answer.
1) 64 only a perfect square.
2) Difference between 2&5 is 3.
Difference between 5&10 is 5.
Difference between 10&17 is 7.
Difference between 17&26 is 9.
Difference between 26&37 is 11.
Difference between 37&50 is 13.
Difference between 50&64 is 14 (even).
So 64 is correct answer.
Nvidia said:
1 decade ago
This question is asked in nvidia.
Garima said:
1 decade ago
I don't understand questions like this.
If you see this question in another way then.
The logic is.
Add prime nos to get next no. Like:
2+3 = 5.
5+5 = 10.
10+7 = 17.
But 17+9 = 26 but 9 is not a prime no.
So the odd one is 26.
How to know what logic is to be applied.
If you see this question in another way then.
The logic is.
Add prime nos to get next no. Like:
2+3 = 5.
5+5 = 10.
10+7 = 17.
But 17+9 = 26 but 9 is not a prime no.
So the odd one is 26.
How to know what logic is to be applied.
Gurjot said:
1 decade ago
(2)2 - 2 = 2 i.e. [square of the no. and subtract 2 and so on..].
(3)2 - 4 = 5 So square the next no. and subtract the the no. by 4 now so on.
(4)2 - 6 = 10.
(5)2 - 8 = 17.
(6)2 - 10 = 26.
(7)2 - 12 = 37.
(8)2 - 14 = 50.
(9)2 - 16 = 65.
So the odd one is 64 (:
(3)2 - 4 = 5 So square the next no. and subtract the the no. by 4 now so on.
(4)2 - 6 = 10.
(5)2 - 8 = 17.
(6)2 - 10 = 26.
(7)2 - 12 = 37.
(8)2 - 14 = 50.
(9)2 - 16 = 65.
So the odd one is 64 (:
Anuja said:
1 decade ago
@Garima.
You can say that to obtain next number an odd number is added to it.
You can say that to obtain next number an odd number is added to it.
Gajendra said:
1 decade ago
Difference b/w pair of digit like that 3, 5, 7, 9, 11, 13, 15.. Therefore last number should be 50+15 = 65.
5-2=3, 10-5=5, 17-10=7, 26-17=9, 37-26=11, 50-37=13, but 64-50=14.
5-2=3, 10-5=5, 17-10=7, 26-17=9, 37-26=11, 50-37=13, but 64-50=14.
Kesab said:
1 decade ago
Square of the x and add +1, x =1,2,3,4,5,6,7,8.
Square(1)+1=2, square(2)+1=5,.......square(8)+1=65.
So, Result is 64.
Square(1)+1=2, square(2)+1=5,.......square(8)+1=65.
So, Result is 64.
Triple M said:
1 decade ago
Adding next odd number to our sum = 2+3 = 5.
5+5 = 10.
10+7 = 17.
17+9 = 26 and to 50+15 not equal to 64.
Answer is 64.
5+5 = 10.
10+7 = 17.
17+9 = 26 and to 50+15 not equal to 64.
Answer is 64.
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