Nice brain teaser

**math_04** · Feb11-09, 03:25 AM

1,8,15,22,29,36,...............

49,343,2401,.............

77,74,71,68,65,.............

What do all these sequences have in common?

**Rogerio** · Feb11-09, 09:12 AM

Spoiler

The digit 1

**DaveC426913** · Feb11-09, 09:34 AM

Well, they're all simple sequences...

n=(n-1)+7
n=(n-1)x7
n=(n-1)-3

**davee123** · Feb12-09, 01:53 PM

- All of the numbers in the sequences are integers.
- If you concatenate the digits of the sequences, each one has the digits "201".
- Each sequence's odd-numbered entries are odd.
- If you concatenate the digits of each sequence, and add the 25th through 35th digits, you'll get the same total, 42.

DaveE

**neu** · Feb13-09, 09:12 AM

The number 7?

**DaveC426913** · Feb14-09, 12:52 AM

sigh.

Commas, ellipses and integers.

Asked & answered.

math_04: we've given answers that have met the criteria. Either grant us a win or tell us there's a better answer than the ones we've provided.

**dawnzky05** · Feb14-09, 08:02 PM

I guess its the number seven and the digits being integers. Am I getting the right answer to the teasers?

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tease your eyes

**DaveC426913** · Feb14-09, 08:17 PM

I don't see what 7 has to do with the third sequence.