2, 1, 1/2, 1/4 ...
The answer is either:
a)arithmetic
b)combination
c)geometric
d)permutation
2006-11-07 05:06:21 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
c) geometric. Every term is 1/2 of the prior term. The ratio is 1/2.
2006-11-07 05:11:20 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
This is a geometric progression:
A geometric progression takes the form,
the nth term = a * r ^ (n- 1), where 'a' is the 1st term, and r is the common ratio.
Therefore this sequence takes the form 2*(1/2) ^ (n - 1)
2006-11-07 13:18:49 · answer #2 · answered by ludacrusher 4 · 0⤊ 0⤋
This is sries not a sequence. Each term has a common multiple of the previous on so is a geometric series. Common multiple is 1/2.
2006-11-07 16:08:19 · answer #3 · answered by Mathew C 5 · 0⤊ 0⤋
It's Geometric, meaning each term is obtained by multiplying (not dividing) the previous one by a factor (here it's 1/2 or 0.5 )
If you divide by 1/2 , it's the same as multiply by 2 , LOL !
2006-11-07 13:13:38 · answer #4 · answered by Duke_Neuro 2 · 0⤊ 0⤋
Geometric. Each term is related to the previous one by a certain ratio. Imagine the series plotted on a coordinate grid; the geometrical progression is obvious.
f(n) = f(n-1)/2
to be exact.
2006-11-07 13:13:26 · answer #5 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
a dumb one
2006-11-07 13:08:51 · answer #6 · answered by bob v 2 · 0⤊ 1⤋
c)
2006-11-07 13:13:49 · answer #7 · answered by Anonymous · 0⤊ 0⤋