Aptitude - Odd Man Out and Series - Discussion

Find the odd man out.

12. 

835, 734, 642, 751, 853, 981, 532

[A]. 751
[B]. 853
[C]. 981
[D]. 532

Answer: Option A

Explanation:

In each number except 751, the difference of third and first digit is the middle one.

Rabish Kumar said: (Jan 2, 2011)  
Sum of digits of each number is an even number except 751.

Sundar said: (Dec 8, 2011)  
1st digit = 2nd digit + 3rd digit.

3rd digit = 1st digit - 2nd digit.

Nagendrareddy said: (Dec 24, 2011)  
We can do like this also
8-5=3
7-4=3
:::

Sonutalwani said: (Jun 29, 2012)  
8+3+5=16 even.
7+3+4=14 even.
6+4+2=12 even.
7+5+1=13 odd.
8+5+3=16 even.
9+8+1=18 even.
5+3+2=10 even.

751 is answer.

Sonutalwani said: (Jun 29, 2012)  
8 - 5 = 3 835.
7 - 4 = 3 734.
6 - 2 = 4 642.
7 - 1 = 6 751. It is wrong answer.
8 - 3 = 5 853.
9 - 1 = 8 981.
5 - 2 = 3 532.

Ramya Devi said: (Jul 10, 2012)  
In each number except 751, the sum of 2nd digit and 3rd digit is the first one.

Tarun said: (Dec 20, 2012)  
This one is more easy
3+5=8 of 835
3+4=7 of 734
4+2=6 of 642
5+1=6 of 751 This is wrong because we got the result of addition as 6 instead of 7.
5+3=8 of 853
8+1=9 of 981
3+2=5 of 532

Hameed Imran said: (Jul 29, 2013)  
8-5=3 of 835.

7-4=3 of 734.

6-2=4 of 642.

7-1 = 6 of 751 This one is wrong, because we got the result 6 instead of 5. (subtract first and last digit will get centerone as a result).

8-3=5 of 853.

9-1=8 of 981.

5-2=3 of 532.

Sikkanthar said: (Aug 28, 2013)  
I was thought the sum of last two digit number is equal to the first digit number.

All the following are satisfied the conditions except 751. So I was thought "751" is wrong.

Like:

8 = 5+3
7 = 4+3
9 = 8+1

Can we use this method. If anyone knows tell me.

Satyaranjan said: (Jun 25, 2014)  
8 - 5 = 3 835.
7 - 4 = 3 734.
6 - 2 = 4 642.
7 - 1 = 6 751.
8 - 3 = 5 853.
9 - 1 = 8 981.
5 - 2 = 3 532.

In this number series 751 is odd because in other numbers the 1st digit is find out by adding 2nd and 3rd digit simultaneously, but in 751 it is not happening.

Praveen said: (Mar 10, 2016)  
How about 981 as the odd one out because it is the only number divisible by 9 others are not divisible?

Nivetha said: (May 1, 2016)  
8 - 3 = 5
7 - 3 = 4
6 - 4 = 2
7 - 5 = 2 is wrong answer
8 - 5 = 3
9 - 8 = 1
5 - 3 = 2

So the wrong term is 751.

Tusshara said: (Jul 4, 2016)  
Second + third digit = First digit.

Tilak Rajkaushal said: (Feb 10, 2017)  
751 & 853 are prime numbers.

Skm1703 said: (Jul 25, 2018)  
Only 532 is divisible by 7.

Anzir said: (Sep 25, 2018)  
Thank you all for explaining this.

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