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 3 of 7.
Shantanu said:
1 decade ago
Hey people it should be 73 also..... because in each case 2 is getting added and in that case 73 doesn't fit!!
Vikash said:
1 decade ago
Ya dude you are right
41+2=43
43+4=47
47+6=53
53+8=61
61+10=71
71+12=83
So 81 doesn't fit in the series.
41+2=43
43+4=47
47+6=53
53+8=61
61+10=71
71+12=83
So 81 doesn't fit in the series.
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.
Raju said:
1 decade ago
Hey how you express above formula in to the sum. tn=t (n-1) +2n.
For example =41 (1-1) +2*1=2.
For example =41 (1-1) +2*1=2.
Vijayalakshmi said:
8 years ago
What is a prime no?
@Murali.
How did you wrote the series of prime no. Can you explain it?
@Murali.
How did you wrote the series of prime no. Can you explain it?
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)
Sakthi Thiyagu said:
6 years ago
Read the answer properly, it say that except 81 all are prime number. To all genius.
(1)
Shree said:
4 years ago
43, 47, 53, 61, 71, 73 all are prime numbers but only 81 non-prime.
So the answer is 81.
So the answer is 81.
TANMOY said:
9 years ago
BUT why not 73 because its also not fit in series with 81? both are not fit isn't it?
Neha Sultan said:
9 years ago
It's 81.
That's because NO OTHER NUMBER IS PERFECTLY DIVISIBLE BY 3, EXCEPT 81.
That's because NO OTHER NUMBER IS PERFECTLY DIVISIBLE BY 3, EXCEPT 81.
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