Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Odd Man Out (Q.No. 13)
Directions to Solve
Find the odd man out.
13.
41, 43, 47, 53, 61, 71, 73, 81
Answer: Option
Explanation:
Each of the numbers except 81 is a prime number.
Discussion:
62 comments Page 2 of 7.
Abhi said:
6 years ago
81 is the only one which is divisible by 3.
(1)
Arjun Tejaswi.S said:
6 years ago
It can be solved in this way too.
41+(1*1)+1 = 43
43+(2*1)+2 = 47
47+(3*1)+3 = 53
53+(4*1)+4 = 61
61+(5*1)+5 = 71
71+(6*1)+6 = 83.
And here 81. So, therefore, it is out of the series.
41+(1*1)+1 = 43
43+(2*1)+2 = 47
47+(3*1)+3 = 53
53+(4*1)+4 = 61
61+(5*1)+5 = 71
71+(6*1)+6 = 83.
And here 81. So, therefore, it is out of the series.
(4)
Kiran dudi said:
7 years ago
Why not 73?
(1)
Raja Ram Choudhary said:
7 years ago
@Saurabh.
A number that is divisible only by itself and 1, then we are called prime number.
A number that is divisible only by itself and 1, then we are called prime number.
(2)
Vimala said:
7 years ago
81 is the only number divisible by 3.
Abhay Raj said:
8 years ago
41+2 = 43.
43+4 = 47.
47+6 = 53.
53+8 = 61.
61+10 = 71.
So 81 is not correct.
43+4 = 47.
47+6 = 53.
53+8 = 61.
61+10 = 71.
So 81 is not correct.
Bunny said:
8 years ago
Yes, @Amit is right answer 73.
SARUKH said:
8 years ago
They all are prime no except 81. So simply 81is the perfect solution.
Mukesh Yadav said:
8 years ago
Yes, I agree @Karthika.
Amandeep said:
8 years ago
81 is right because no any number in the series divide by any number.
only 81 divide with 3,
27.
only 81 divide with 3,
27.
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