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## Familiar Numbers

Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.

 Puzzle ID: #48894 Fun: (2.14) Difficulty: (0.79) Category: Series Submitted By: Sneakattack

What number comes next?

7, 4, 1, 8, 5, ?

The next number is 2.

If you go vertically down and from left-to-right on the numeric keypad on your keyboard, you will get those numbers. This is what a numeric keypad looks like:

7 8 9
4 5 6
1 2 3

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 Sneakattack Jul 23, 2011 This is my first brainteaser. SUPD200 Jul 23, 2011 Nice brainteaser! I was thinking of subtracting 3 to each number, since when you subtract 3 to 1, you get -8, but I saw no negative sign. DemonLord8 Jul 24, 2011 Nice teaser! I thought the pattern was -3 then +7.... 7-3=4 4-3=1 1+7=8 8-3=5 5-3=2 opalrose25 Jul 24, 2011 Great teaser but I didn't have a keyboard in front of me since I did it on my iPad dancingrobots_ Jul 24, 2011 I did it as Seven has 5 letters. The next has 4 then 3. Then i started again at Eight with 5 letters. And so you would need another number with 3 letters, so i got TWO. Its a sequence of 5-4-3, 5-4-3. Sneakattack Jul 25, 2011 Interesting observation dancingrobots xdbtcp Jul 25, 2011 I got it right, but I was going 'up' on my phone instead of 'down' on the keyboard... Kronos Jul 25, 2011 I got it the same way as Demon. Good job. Fun but easy. Mandy7 Jul 27, 2011 y r u named kronos? u no thatz the name of the evil Titan lord in the Greek stories? ugh lolia Jul 31, 2011 i got it right and yeh it was fun but easy Brain1231994 Aug 01, 2011 I have a laptop (which means 0 key pad) dishagarg Jun 07, 2012 mine ws a diff approach...dint any1 notice that the numbers in the series are those of the units place digits dat occur in the 7's table rashad Oct 30, 2012 In another way : 7 - 3 = 4 4 - 3 = 1 Now just imagine the numbers from 0 to 9 as a chain circle, so 0-1=9 and 4 - 7 = 7. Then : 1 - 3 = 8 8 - 3 = 5 5 - 3 = 2 kitty-cat Feb 26, 2013 Well, I'm on a laptop. Got it anyway...thought about what a computer keyboard would look like. spikethru4 Feb 26, 2013 On most keypads, 0 is directly below 1 (as a double-width key), so you could introduce 0 into the series to make it a little harder and throw off the mathematical reasoning. 7, 4, 1, 0, 8, 5, ...