General Question

AriellaCG's avatar

What number comes next in this pattern?

Asked by AriellaCG (67points) April 13th, 2007
1, 2, 5, 10, 4, 8, 20, 40, ___?
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10 Answers

ben's avatar
explain
ben (9085points)“Great Answer” (0points) Flag as…
ben's avatar
Yes, that looks right.
ben (9085points)“Great Answer” (0points) Flag as…
skfinkel's avatar
x2,x2.5,x2, divided by 2.5, x2, x2.5, x2, divided by 2.5 (16)
skfinkel (13537points)“Great Answer” (0points) Flag as…
ben's avatar
Another way of looking at it is two intermittent tracks of double numbers, track 1 starting at 1 and track 2 starting at 5... every track double each time, and every two you switch tracks...
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ben's avatar
Really it's the same thing... either way you get 16
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skfinkel's avatar
how do you get back to the beginning number?the switch tracks of each set?
skfinkel (13537points)“Great Answer” (0points) Flag as…
skfinkel's avatar
never mind, I see.
skfinkel (13537points)“Great Answer” (0points) Flag as…
gailcalled's avatar
I stared at this and thought until my brain turned to mush. Nice to see that part of the family has the math gene. Thanks for putting me out of my misery.
gailcalled (54647points)“Great Answer” (0points) Flag as…

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