Find the rule 1,1,2,3,5,8, () 21

Each number is the sum of the first two
Thirteen
This is Fibonacci sequence, also known as golden section sequence, which is very common in the future

Fill in the numbers 0,1,1,2,3,5, (), ()

8 13
0+1=1
1+1=2
1+2=3
2+3=5
3+5=8
5+8=13

Find the rule 0.3, 0.7, 1.5 ,____ ,12.7

3.1 6.3

Find the rule 3.5,1.75, [], [], 0.21875

Divide each number by two
3.5,1.75,（0.875）,（0.4375）,0.21875

Find the rule 1.1.2.3.5.8.13.21.34.55 what is the 199th

The latter number is the sum of the first two
This is a Fibonacci sequence
f(n)=f(n-1)+f（n-2）f(1)=1 f(2)=1 f(3)=2
The 199th is 1.7340e + 041
The general items are
f=((1+sqrt(5))/2)^(n)/sqrt(5)-((1-sqrt(5))/2)^(n)/sqrt(5)

1 / 2,1 / 3,2 / 5,3 / 8,5 / 13, (), () 21 / 55

8/21 13/34
The sum of the first two denominators equals the third denominator, and the sum of molecules equals the third!

Find the law: 1 / 2, 3 / 5, 5 / 13, 7 / 34, 21 () ()

According to the law, the following are: 55 out of 9 and 89, 144 out of 11 and 233
The answer is not easy to accept

Find the law: 1,1,2,3,5,8,13,21,34,55 , ,__……

From the third number, each number is equal to the sum of the two preceding it
Then 89, 143, 232

Fill in 4, 9, 16, 25, [], 49, 64, 1, 8, 27,], 125, [] - 16, 25, [], 49, 64. (II) 27, [], 125, []

36 64 216

Find out the law 1 1 / 4, 2 1 / 9, 3 2 / 16, 4 3 / 25, 5 5 / 36, 68 / 49, 7 13 / 64, () All are with scores, find the rules, please be more detailed, O (∩)_ Thank you

Rule: the integer part is 1, 2, 3, 4, 5, 6, 7, so the numerator of the integral part is 8, and the numerator is 1 + 1 = 2, 1 + 2 = 3, 2 + 3 = 5, 3 + 5 = 8, 5 + 8 = 13, so the numerator is 8 + 13 = 21, and the denominator is 2? = 4, 3? = 9, 4? = 16, 5? = 25, 6? = 36, 7? = 49, 8

Find the rule 1,1,2,3,5,8, () 21