Brain Teasers
6, 24, 60, 120, 210, 336, 504, ?
What's the next number in this series?
6, 24, 60, 120, 210, 336, 504, ?
6, 24, 60, 120, 210, 336, 504, ?
Answer
720.1*2*3=6
2*3*4=24
3*4*5=60
4*5*6=120
5*6*7=210
6*7*8=336
7*8*9=504
8*9*10=720
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Comments
I got this one, but I worked it out differently. Great teaser!
Great job! I usually get these number sequences, but you got me
Not too good at math, but great teaser
I never get these. Nice job!!
I got this as (n^3)-n, which, I now see, is just a mathematical identity of (n-1)*n*(n+1), starting the series at n=2. Very good teaser.
Sep 04, 2006
or n(n+1)(n+2) starting the sequence at 1?
Fascinating how math works. Another formula that gets the same results is n to the power of 3 minus n. I.E.
2x2x2-2 = 6
3x3x3-3 = 24
4x4x4-4 = 60
5x5x5-5 = 120
6x6x6-6 = 210
7x7x7-7 = 336
8x8x8-8 = 504
9x9x9-9 = 720
2x2x2-2 = 6
3x3x3-3 = 24
4x4x4-4 = 60
5x5x5-5 = 120
6x6x6-6 = 210
7x7x7-7 = 336
8x8x8-8 = 504
9x9x9-9 = 720
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