Familiar Numbers
Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What number comes next?
7, 4, 1, 8, 5, ?
HintLook down and to the right.
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Answer
The next number is 2.
If you go vertically down and from lefttoright 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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Comments
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....
73=4
43=1
1+7=8
83=5
53=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 543, 543. 
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 01=9 and 4  7 = 7.
Then :
1  3 = 8
8  3 = 5
5  3 = 2 
kittycat
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 doublewidth 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, ... 
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