Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Odd Man Out (Q.No. 8)
Directions to Solve
Find the odd man out.
8.
2, 5, 10, 17, 26, 37, 50, 64
Answer: Option
Explanation:
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
Discussion:
49 comments Page 2 of 5.
Jethalal said:
6 years ago
Yes right, Thanks @Sanjeevani Tiwari.
(1)
Rjkomal said:
7 years ago
2+3 = 5.
5+5 = 10.
10+7 = 17.
17+9 = 26.
26+11 = 37.
37+13 = 50.
but 50+15 = 65.
Hence, 64 is odd in the series.
5+5 = 10.
10+7 = 17.
17+9 = 26.
26+11 = 37.
37+13 = 50.
but 50+15 = 65.
Hence, 64 is odd in the series.
Dayanand said:
1 decade ago
2+2+1 = 5.
5+4+1 = 10.
10+6+1 = 17.
17+8+1 = 26.
26+10+1 = 37.
37+12+1 = 50.
50+14+1 = 65.
5+4+1 = 10.
10+6+1 = 17.
17+8+1 = 26.
26+10+1 = 37.
37+12+1 = 50.
50+14+1 = 65.
Aniket said:
9 years ago
2, 10, 26, 50 are divisible by 2, where 5, 17, 37 are not divisible by 2.
Ravi said:
10 years ago
Each number has difference of odd numbers 3, 5, 7, 9, 11, 13.
Tonyo said:
10 years ago
2 + 3 = 5.
5 + 5 = 10.
10 + 7 = 17.
And so on.
5 + 5 = 10.
10 + 7 = 17.
And so on.
Suneel varma bhupathi raju said:
1 decade ago
In between 2and 5 there are two numbers i.e., 3, 4.
Similarly 5 and 10 there are four numbers i.e., 6, 7, 8, 9.
Between 10 and 17 there are six numbers i.e., 5, 11, 12, 13, 14, 15, 16.
Similarly, the order is increased like 2, 4, 6, 8, 10, 12, 14.
But the last two numbers 50 and 64 there are only 13 numbers.
So the answer is 64.
Similarly 5 and 10 there are four numbers i.e., 6, 7, 8, 9.
Between 10 and 17 there are six numbers i.e., 5, 11, 12, 13, 14, 15, 16.
Similarly, the order is increased like 2, 4, 6, 8, 10, 12, 14.
But the last two numbers 50 and 64 there are only 13 numbers.
So the answer is 64.
Ubaid said:
1 decade ago
Only 64 is perfect square.
Balu said:
1 decade ago
Difference between 2 and 5 is 3, similarly difference 5 and 10 is 5.
Difference between 10 and 17 is 7, similarly difference between 17 and 26 is 9, difference between 26 and 37 is 11, difference between 37 and 50 is 13, difference between 50 and 64 is 14 (it is an odd one which have to ruled out).
So we have to add 3 5 7 11 13 15.
Difference between 10 and 17 is 7, similarly difference between 17 and 26 is 9, difference between 26 and 37 is 11, difference between 37 and 50 is 13, difference between 50 and 64 is 14 (it is an odd one which have to ruled out).
So we have to add 3 5 7 11 13 15.
Amita said:
1 decade ago
Difference between each number is odd like 3, 5, 7, 9. And last two numbers difference is even.
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