Aptitude - Odd Man Out and Series - Discussion

Discussion Forum : Odd Man Out and Series - Missing No. (Q.No. 7)
Directions to Solve
Insert the missing number.

7.
8, 24, 12, 36, 18, 54, (....)
27
108
68
72
Answer: Option
Explanation:

Numbers are alternatively multiplied by 3 and divided by 2.

So, the next number = 54 ÷ 2 = 27.

Discussion:
37 comments Page 3 of 4.

SIDDIK said:   9 years ago
8*3=24, 24/2=12.
12*3=36, 36/2=18.
18*3=54, 54/2=27.

27 is the right answer.

Arvind said:   10 years ago
8, 24, 12, 36, 18, 54, (...).

8*3 = 24%2 = 12;

12*3 = 36%2 = 18;

18*3 = 54%2 = 27;

So answer is 27.

Koti said:   1 decade ago
We can take 2 series.

8, 12, 18, 26 with 4, 6, 8 differences.

24, 36, 54, 78 which is multiple of 3 for above terms?

Abdur rehman said:   1 decade ago
It's so easy just see if 2nd digit comes in 1st digit table and then keep same series for other numbers. For example 24 comes in table of 8 so 8 into 3 will be 24. If we divide 24/2 then it will be 12. If 12 multiplied by 3 then it will be 36. 36 divide by 2 it will become 18. 18 multiplied by 3 will be 54. 54/2 will be 27. So answer will be 27.

Abhijit said:   1 decade ago
8, 24, 12, 36, 18, 54, (....)

8*3 = 24%2 = 12;
12*3 = 36%2 = 18;
18*3 = 54%2 = 27;

So answer is 27.

Vijay kumar sharma lnct bhopal said:   1 decade ago
Here the next term is twice the previous term like 24 is just twice of 12 and 36 just twice of 18 so 54 is just twice of 27 so answer is 27.

Hanumanth said:   1 decade ago
8, 24, 24/2 = 12, 36, 36/2 = 18, 54, 54/2 = 27.

Rajesh said:   1 decade ago
Hi @Meenali.

I would like to aries one question how?

8+3 = 12 can you explain me please?

Meenali said:   1 decade ago
2 series are there:

8,12,18,.... and 24,36,54.....

8+3 = 12.
12+6 = 18.
18+9 = 27.

Multiples of 3 are added.

Ashok said:   1 decade ago
8, 24, 12, 36, 18, 54, (....)

8*3=24, 8+4=12....by adding 4
12*3=36, 12+6=18...by adding 4+2=6
18*3=54, 18+9=27...by adding 6+3=9
...by adding 9+4=13 and so on.by increasing nos.like 2,3,4,5 and so on .
1st number*3=24
2nd number*3=36
3rd number*3=54
4th number*3=???


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