Sixth grade mathematics to find the law to fill in the number! 81/16,81/16 27/8 9/4 3/2,（）,（） Hurry, hurry, hurry!! This is the homework for tonight! It's due tomorrow!

One, two-thirds of the answers are accurate

Question 1 4, 2, 1, 1 / 2, 1 / 4, (), (), ()
Question 2 1 of 8, 1 of 32, 1 of 4, 1 of 16, (), (), ()
The third question: 1 / 2, 1 / 6, 1 / 12, 1 / 20, 1 / 30, 1 / 43 (), (), ()
I'm very sorry, no wealth!
Question 1 4, 2, 1, 1 / 2, 1 / 4, (), (), ()
Question 2 1 of 8, 1 of 32, 1 of 4, 1 of 16, (), (), ()
1 / 2, 1 / 6, 1 / 12, 1 / 20, 1 / 30, 1 / 42 (), (), ()
I'm very sorry, no wealth!
This is right. The last one in question three is one in 42

One eighth, one sixteenth and one thirty-two
Half, quarter, one
One in three, one in fifty-six, one in seventy-two, one in ninety

Find a rule to fill in the blanks of grade 6!
(1) 3/8 1/8 1/24 ( ) 1/216
(2) 3/4 1/2 1/3 ( ) 4/27 ( )
Speed!
By the way, there is also a question to fill in the blanks [when the number of people in class 6 (1) is 1 / 5, it's just equal to the number of people in class 6 (2). Originally, the number of people in class 6 2 is () a.2/5 B 3 / 5 C 4 / 5 of class 6 1

(1) 3 / 8 1 / 8 1 / 24 (1 / 72) 1 / 216 the former item is multiplied by 1 / 3 to get the latter item (2) 3 / 4 1 / 2 1 / 3 (2 / 9) 4 / 27 (8 / 81) the former item is multiplied by 2 / 3 to get the latter item. The number of people in class 6 (1) is just equal to that in class 6 (2). The number of people in class 6-2 is the same as that in class 6-1 (...)

Find the rules,
3%, 3 / 5, 3 / 4, () decimal

Right + 3 / 20 (45)%, (0.9) decimal

Sixth grade mathematics to find the law to fill in the number! 81/16,81/16 27/8 9/4 3/2,（ ）,（ ） Hurry, hurry, hurry!! This is the homework for tonight! It's due tomorrow!