2007-09-06 14:39:50 · 15 answers · asked by mike 1 in Science & Mathematics ➔ Mathematics
the sequence is adding the next number to the previous one. i.e. 2 +1 = 3 3+2=5 5+3=8
so the 8th digit would be 21
9th would be 34
2007-09-06 14:43:53 · answer #1 · answered by Anonymous · 0⤊ 0⤋
This sequence is very famous.
each number is obtained by adding two previous numbers.
2=1+1
3=2+1
5=3+2
and so the 8th number is 13+8= "21" and the 9th is 21+13= "34".
2007-09-06 21:57:44 · answer #2 · answered by Ali 2 · 0⤊ 0⤋
this is a simple number sequence, know as the Fibonacci sequence, it is solved by adding the previous two numbers to arrive at the next, ex. 1 +1 = 2, 2+1=3, etc. etc. the next two numbers would be, 8+13=21, 13+21= 34, so 21 and 34.
2007-09-06 21:44:32 · answer #3 · answered by mick14731 1 · 0⤊ 0⤋
21, 34
1+1=2
2+1=3
3+2=5
each number is the sum of the previous 2 numbers
2007-09-06 21:44:25 · answer #4 · answered by kelsey 7 · 0⤊ 0⤋
the 9th would be 34,because you add the 7th and the 8th together to get the 9th.1+ 1 = 2,1+2=3,3+2=5,5+3=8 etc
2007-09-06 21:45:43 · answer #5 · answered by sapper605 3 · 0⤊ 0⤋
the 9th number would be 34
2007-09-06 21:43:57 · answer #6 · answered by Maria 2 · 0⤊ 0⤋
fibonacci
8th = 21
9th = 34
2007-09-06 21:43:57 · answer #7 · answered by Anonymous · 0⤊ 0⤋
21 AND THEN THE 9TH IS 34.
You add the 2 number right before it. good luck.
2007-09-06 21:44:06 · answer #8 · answered by Fordman 7 · 0⤊ 0⤋
That's recognizable as a Fibonacci sequence. He didn't invent the sequence, but he described it to Europe.
1,1,2,3,5,8,13,21,34,55,89,144...
8th number is 21.
9th number is 34.
2007-09-06 21:43:58 · answer #9 · answered by Anonymous · 0⤊ 0⤋
21, 34
2007-09-06 21:43:14 · answer #10 · answered by Anonymous · 0⤊ 0⤋