# Aptitude - Odd Man Out and Series - Discussion

Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 1)

*Directions to Solve*

Find out the wrong number in the series.

1.

7, 8, 18, 57, 228, 1165, 6996

Answer: Option

Explanation:

Let the given numbers be A, B, C, D, E, F, G.

Then, A, A x 1 + 1, B x 2 + 2, C x 3 + 3, D x 4 + 4, E x 5 + 5, F x 6 + 6 are the required numbers.

Clearly, 228 is wrong.

Discussion:

22 comments Page 2 of 3.
Fatima said:
7 years ago

Thanks to all.

Shariq said:
7 years ago

Thanks @Sundar and @Nandini! Logic is very clear and understandable.

Karge said:
8 years ago

Nice explanation. Thank you guys.

Arjun said:
8 years ago

This is simple method @Jeeva. Try yourself to understand.

Jeeva said:
8 years ago

I can't understand this logic sir. Can you please explain?

NANDINI said:
1 decade ago

The given series 7, 8, 18, 57, 228, 1165, 6996

And the given series in the format of

A, AX1+1, BX2+2, CX3+3, DX4+4, EX5+5, FX6+6, GX7+7

BECAUSE CHECK THE SERIES

A=7

AX1+1=7X1+1=8

BX2+2=8X2+2=18

CX3+3=18x3+3=57

Dx4+4=57x4+4=232 < Here is the wrong>

Ex5+5=232x5+5=1165 This is the process.

And the given series in the format of

A, AX1+1, BX2+2, CX3+3, DX4+4, EX5+5, FX6+6, GX7+7

BECAUSE CHECK THE SERIES

A=7

AX1+1=7X1+1=8

BX2+2=8X2+2=18

CX3+3=18x3+3=57

Dx4+4=57x4+4=232 < Here is the wrong>

Ex5+5=232x5+5=1165 This is the process.

Satya said:
1 decade ago

I can't undestand.

Hari said:
1 decade ago

Good sundar.

Satyam said:
1 decade ago

Thanks Sundar.

Rita said:
1 decade ago

Wow.

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