# Aptitude - Odd Man Out and Series - Discussion

Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 4)

*Directions to Solve*

Find out the wrong number in the series.

4.

445, 221, 109, 46, 25, 11, 4

Answer: Option

Explanation:

Go on subtracting 3 and dividing the result by 2 to obtain the next number.

Clearly, 46 is wrong.

Discussion:

23 comments Page 2 of 3.
Apoorv said:
7 years ago

Sum every digit of every number in the series.

4 5 1 1 7 2 4. There's anyhow increase and decrease in the difference of number. Except 1 at the 4th place. Which corresponds to 46!

4 5 1 1 7 2 4. There's anyhow increase and decrease in the difference of number. Except 1 at the 4th place. Which corresponds to 46!

Raju Rockzz said:
8 years ago

Super explanation @Nagendramurthy.

Viji said:
8 years ago

Good explanation, thank you @Nagendramurthy.

Albert said:
8 years ago

Very tough to find the answer.

Srinithi said:
9 years ago

Its really a tough question. Could not judge the way in which the series is written?

BoB said:
9 years ago

Hi but how did you find that it must be subtracted by 3 and multied by 2, seeing the question ? can any one help please.

Adesh said:
1 decade ago

Yes 109 is wrong because 74* 35=2590 which is not the next number in the given series?

Satya said:
1 decade ago

I had solved this problem like this.

Starting from the end.

4.

4+7=11,

11+14=25,

25+21=46,

46+28=74. So 109 is wrong.

Can anybody say whether the way is correct are not? and why?

Starting from the end.

4.

4+7=11,

11+14=25,

25+21=46,

46+28=74. So 109 is wrong.

Can anybody say whether the way is correct are not? and why?

Priyanka said:
1 decade ago

4*2+3=11

11*2+3=25

25*2+3=53 ------------ 46 which is an wrong series.

53*2+3=109

109*2+3=221

221*2+3=445

You might can understand this.

11*2+3=25

25*2+3=53 ------------ 46 which is an wrong series.

53*2+3=109

109*2+3=221

221*2+3=445

You might can understand this.

AMMU said:
1 decade ago

Nice explanation by Mr. Nagendramurthy. Thanks.

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