0, 1, 2, 4, 7, 12, 20, () to find the law

0, 1, 2, 4, 7, 12, 20, () to find the law

0 + 1 + 1 = 21 + 2 + 1 = 42 + 4 + 1 = 7 4 + 7 + 1 = 12 7 + 12 + 1 = 20 12 + 20 + 1 = 33 is the sum of the first two numbers plus one, so write 33 in brackets. I hope my answer will help you

0.68-1 / 8-3 / 8 = 12 / 17 + (5 / 47 + 3 / 20) = 2. Fill in 1,2 / 3,5 / 3,4 / 3,2,3 () ()

0.68-1/8-3/8= 0.68-（1/8+3/8）=0.68-0.5=0.18
5/47?
12/17+（5/17+3/20）=（12/17+5/17）+3/20=1+3/20=23/20

Observe the arrangement rules of 1 / 2, 3 / 5, 8 / 13, 21 / 34, () (). What do you find? Simply write down the rules you find,
And fill in the numbers 5 and 6 according to the law

Molecule: 3 = 1 + 2
8 = 5+3
21 = 8+13
Denominator: 5 = 2 + 3
13 =5+8
34 = 13+21
So we should fill in 55 / 89, 144 / 233

Please help me find out the rule of this problem. 1 / 2, 3 / 5, 8 / 13, 21 / 34, 55 / 89, what should be filled in after?

1+2=3
2+3=5
3+5=8
5+8=13
13+21=34
21+34=55
34+55=89
55+89=144
89+144=233
So fill in 144 / 233
You've figured it out yourself,
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