Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Odd Man Out (Q.No. 5)
Directions to Solve
Find the odd man out.
5.
6, 9, 15, 21, 24, 28, 30
Answer: Option
Explanation:
Each of the numbers except 28, is a multiple of 3.
Discussion:
24 comments Page 2 of 3.
AGNIVA SAHA said:
9 years ago
Answer. 21 because except 21 all are divisible by 2.
Ayub said:
9 years ago
All are divisible 3 but 28 not divisible by 3.
Kousik said:
1 decade ago
Each of the numbers except 28, is a multiple of 3.
Tushar said:
1 decade ago
As 9 is the only perfect square among all the options, hence 9 should be the answer.
Arpit Kumar Gaur said:
1 decade ago
Very simple just see the table of 3.
3*2=6.
3*3=9.
3*4=12.
3*5=15.
3*6=18.
3*7=21.
3*8=24.
3*9=27.
3*10=30.
So 28 is not a multiple by 3. So wrong answer is 28.
3*2=6.
3*3=9.
3*4=12.
3*5=15.
3*6=18.
3*7=21.
3*8=24.
3*9=27.
3*10=30.
So 28 is not a multiple by 3. So wrong answer is 28.
Pavi said:
1 decade ago
All numbers are divided by 3 but 28 is not divisible by 3.
Sree said:
1 decade ago
By adding two digit numbers we get only single digit but 28 we get again two digits.
For 21 2+1 = 3 so on.
But 28 2+8 = 10.
For 21 2+1 = 3 so on.
But 28 2+8 = 10.
Mahesh said:
1 decade ago
All the numbers are divided by 3 but 28 is not divisble
Sonutalwani said:
1 decade ago
3*2=6
3*3=9
3*5=15
3*7=21
3*8=24
3*10=30
But 28 is not divided by 3.
3*3=9
3*5=15
3*7=21
3*8=24
3*10=30
But 28 is not divided by 3.
Vimal said:
1 decade ago
6, 9, 15, 21, 24, 28, 30
All the numbers are addition of 3, except 28
3+3=6
3+3+3=9
3+3+3+3+3=15
3+3+3+3+3+3+3=21
3+3+3+3+3+3+3+3=24
3+3+3+3+3+3+3+3+3=27
3+3+3+3+3+3+3+3+3+3=30
or
(another method is all the nos. are coming in table of 3, except 28.)
3*2=6
3*3=9
3*5=15
3*7=21
2*8=24
2*9=27
3*10=30
All the numbers are addition of 3, except 28
3+3=6
3+3+3=9
3+3+3+3+3=15
3+3+3+3+3+3+3=21
3+3+3+3+3+3+3+3=24
3+3+3+3+3+3+3+3+3=27
3+3+3+3+3+3+3+3+3+3=30
or
(another method is all the nos. are coming in table of 3, except 28.)
3*2=6
3*3=9
3*5=15
3*7=21
2*8=24
2*9=27
3*10=30
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers