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:
61 comments Page 4 of 7.
Sandeep Shenoy said:
9 years ago
Answer 81 is correct. Because except 81, all other numbers are a prime number.
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.
Kishore said:
1 decade ago
Except 81 is multiplied wit 9 & other numbers can be multiplied by itself.
Sivezh said:
3 months ago
None of them except 81 are perfect squares. So, it will be the right answer.
Sandeep said:
1 decade ago
Hai friends any can say an easy steps to find like this oddman out problems.
Yogesh Rai said:
1 decade ago
4*10+1, 7*6+1, 6*8-1, 6*9-1, 6*10+1, 7*10+1, 8*9+1,
but there are 9*9= 81
but there are 9*9= 81
SARUKH said:
8 years ago
They all are prime no except 81. So simply 81is the perfect solution.
Snigdha said:
1 decade ago
73 is wrong in the series according to me. 2 is getting added.
Jyoti said:
1 decade ago
81 is not a prime number but it is a perfect square.
Asha said:
1 decade ago
Explain what is prime number, I can't understand.
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