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, (....)
Answer: Option
Explanation:
Numbers are alternatively multiplied by 3 and divided by 2.
So, the next number = 54 ÷ 2 = 27.
Discussion:
37 comments Page 1 of 4.
Tarun said:
1 decade ago
I got 72.
24+12 = 36
36+18 = 54
and
54+18 = 72
Is this correct?
24+12 = 36
36+18 = 54
and
54+18 = 72
Is this correct?
Sundar said:
1 decade ago
Hi Tarun
You are wrong. Then what about other numbers previous to 36 (8, 24, 12) ?
Let me explain in detail.
...
16 / 2 = 08
08 x 3 = 24
24 / 2 = 12
12 x 3 = 36
36 / 2 = 18
18 x 3 = 54
54 / 2 = 27 [The required answer]
27 x 3 = 81
...
I hope this will help you. Have a nice day!
You are wrong. Then what about other numbers previous to 36 (8, 24, 12) ?
Let me explain in detail.
...
16 / 2 = 08
08 x 3 = 24
24 / 2 = 12
12 x 3 = 36
36 / 2 = 18
18 x 3 = 54
54 / 2 = 27 [The required answer]
27 x 3 = 81
...
I hope this will help you. Have a nice day!
Nandha said:
1 decade ago
I have a suggestion. We can also add the 3rd and 5th numbers to get the previous numbers example.
8,24,12,36,18,54 - 8,24,12 = 12+12 = 24 to get 24 in the 1st series
then 36,18,54 = 18+18 to get 36 then 3rd series 27+27 = 54.
8,24,12,36,18,54 - 8,24,12 = 12+12 = 24 to get 24 in the 1st series
then 36,18,54 = 18+18 to get 36 then 3rd series 27+27 = 54.
Sowjanya said:
1 decade ago
It is difficult to find yar, to add alternate numbers and guess the other number and to add those number. It is very difficult. Nandha and explanation of Sundar was right. Good Explanation Sundar.
Raghu said:
1 decade ago
Well said sowjanya. Sunder's explanation was really simle and helpful.
Sarthak said:
1 decade ago
I know how to do it.
8*3=24,
24/2=12,
12*3=36,
36/2=18,
18*3=54,
so 54/2=27.
8*3=24,
24/2=12,
12*3=36,
36/2=18,
18*3=54,
so 54/2=27.
VINAY VERMA said:
1 decade ago
8*3=24
12*3=36
18*3=54
24*3=72
72 ITS RIGHT ANS......
12*3=36
18*3=54
24*3=72
72 ITS RIGHT ANS......
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=???
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=???
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.
8,12,18,.... and 24,36,54.....
8+3 = 12.
12+6 = 18.
18+9 = 27.
Multiples of 3 are added.
Rajesh said:
1 decade ago
Hi @Meenali.
I would like to aries one question how?
8+3 = 12 can you explain me please?
I would like to aries one question how?
8+3 = 12 can you explain me please?
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