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 7 of 7.
Ankita sood said:
1 decade ago
General term is
tn=t(n-1)+2n ,where n is 1,2,3..
t = 41
t1= 41+2(1) = 43
t2= 43+2(2) = 47
t3= 47+2(3) = 53... and so on where 81 doesn't fit into the series.
tn=t(n-1)+2n ,where n is 1,2,3..
t = 41
t1= 41+2(1) = 43
t2= 43+2(2) = 47
t3= 47+2(3) = 53... and so on where 81 doesn't fit into the series.
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