# Aptitude - Odd Man Out and Series - Discussion

Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 8)

*Directions to Solve*

Find out the wrong number in the series.

8.

6, 12, 48, 100, 384, 768, 3072

Answer: Option

Explanation:

Each even term of the series is obtained by multiplying the previous term by 2.

2^{nd} term = (1^{st} term) x 2 = 6 x 2 = 12

4^{th} term = (3^{rd} term) x 2 = 48 x 2 = 96.

6^{th} term = (5^{th} term) x 2 = 384 x 2 =768.

4^{th} term should be 96 instead of 100.

Discussion:

10 comments Page 1 of 1.
Sada said:
7 years ago

Here, 100 is not a multiple of 6.

Shimaz javaid said:
8 years ago

Simplest and correct explanation are other than 100 every term is divisible by 6.

(1)

Vineetha said:
9 years ago

We can easily guess it because, 100 is the only number that is not divisible by 6 in the above series.

Tiyasa Majumdar said:
1 decade ago

The above explanation is wrong but answer is correct.

The logic is:

6*2 = 12.

12*4 = 48.

48*2 = 96.

96*4 = 384.

384*2 = 768.

768*4 = 3072.

So, the odd one is 100.

The logic is:

6*2 = 12.

12*4 = 48.

48*2 = 96.

96*4 = 384.

384*2 = 768.

768*4 = 3072.

So, the odd one is 100.

(1)

Praveen kumar said:
1 decade ago

Sol:1st term into 2; (6*2=12)

2nd term into 4; (12*4=48)

3rd term into 2; (48*2=96)

4th term into 4; (96*4=384)

5th....

6th.... So on

2nd term into 4; (12*4=48)

3rd term into 2; (48*2=96)

4th term into 4; (96*4=384)

5th....

6th.... So on

Ankit said:
1 decade ago

3072/768=4

768/384=2

384/96=4(Here instead of 100, 96 should have been the correct sequence no.)

96/48=2

48/12=4

12/6=2

Remainder is alternatingly 4 & 2

768/384=2

384/96=4(Here instead of 100, 96 should have been the correct sequence no.)

96/48=2

48/12=4

12/6=2

Remainder is alternatingly 4 & 2

Dhanu said:
1 decade ago

7th term = (6th term) * 2 = 768 * 2 = 1536

so above the explanation is wrong coz 7th term not equal to 3072.

so above the explanation is wrong coz 7th term not equal to 3072.

Dhanu said:
1 decade ago

6, 12, 48, 100, 384, 768, 3072.

Divide the num by 2 = 3, 6, 24, 50, 194, 384, 1536 all the number divided by two there is odd.

Divide the number by 3 = 2, 4, 16, 100, 128, 256, 1024 here 100 is not divided by 3.

So 100 is odd.

Divide the num by 2 = 3, 6, 24, 50, 194, 384, 1536 all the number divided by two there is odd.

Divide the number by 3 = 2, 4, 16, 100, 128, 256, 1024 here 100 is not divided by 3.

So 100 is odd.

Kannan.G said:
1 decade ago

Explanation given is not correct because the 7'th term is not equal to 6'th term*2. Think the reason is all the other numbers are multiples of 6 except 100.

Ashik Mohammed Nazar said:
1 decade ago

You can easily guess it because, 100 is the only number that is not divisible by 6 in the above series !!!

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