2007-07-22 18:45:28 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The answer is 308.
The given series can be split into three as:-
1,4,2
8,6,24 &
22,28,?
In each of the above series, it is seen that the product of the first two numbers, divided by 2 gives the third number.
(1*4)/2=2
(8*9)/2=24
So the unknown number must be
(22*28)/2=616/2=308.
2007-07-22 21:27:29 · answer #1 · answered by davidcjo5 4 · 1⤊ 0⤋
It'll be B: 132. Reasoning? The sequence is increasing by powers of 3... 11+(3^0)=12 12+(3^1)=15 15+(3^2)=24 24+(3^3)=51 And the your answer, 51+(3^4)=132
2016-05-20 23:05:44 · answer #2 · answered by hope 3 · 0⤊ 0⤋
Shafu, you have done a snafu. I would expect the series to continue 24, 22, 88, 86, 344. The series starts: initial number, initial number *4, subtract two, mult by 4, etc.
2007-07-22 18:57:17 · answer #3 · answered by cattbarf 7 · 1⤊ 0⤋
28 s/b 88
N(2n) = 4*N(2n - 1)
After 1,
N(2n + 1) = N(2n) - 2
The next 2 terms should be 86, 344
If 28 is correct, there are a number of possible extensions because 28 breaks the previously established pattern.
2007-07-22 19:05:55 · answer #4 · answered by Helmut 7 · 0⤊ 0⤋
the 28 throws a twist... you're sure it shouldn't be 88? cos the pattern prior to that is x4, -2 repeated.
2007-07-22 18:58:42 · answer #5 · answered by gkdehaan 1 · 0⤊ 0⤋
on the first itteration multiply by four, on the second itteration subtract two. Repeat.
Oh wait... nevermind. the 28 throws that all off. darnit.
2007-07-22 18:49:06 · answer #6 · answered by dscougar 4 · 0⤊ 0⤋
that cant be. the 28 doesnt fit. its like x4,-2,x4, then +6?
2007-07-22 19:01:23 · answer #7 · answered by Little Miss WONDERFUL 6 · 0⤊ 0⤋
eleventeen
2007-07-22 18:53:19 · answer #8 · answered by Bucket 2 · 0⤊ 1⤋