Do not repeat the nine numbers 1-9 in the box below, Do not repeat the nine numbers 1-9 in the box below （1）□□×□=□□ □×□=□□ （2）□□÷□=□ □÷□=□□÷□ The nine numbers of 1-9 in each question can't be repeated

27*3=81 6*9=54 56/7=8 9/3=12/4

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1. Will 1.2.3 These nine numbers are filled in the nine squares of the square so that the sum of the numbers in each row, column and three squares on the diagonal line is equal to 15? In the lattice of a 3 × 3 square □□□ □□□ This is in a square Just tell me what it is. Better give me the formula. I'll give it to whoever tells me
2. 1, 3, 5, 7, 9, 11, these six numbers are filled in the square, so that the sum of three numbers on each line is equal to 15?
3. Fill in the box with 12345678 so that the sum of the three numbers on each line equals 15 There is no need to fill in the middle square
4. 2.3.1 horizontal, vertical and oblique are equal to 8.1, and the numbers are not repeated
5. 123456789 how to use addition and subtraction to make it equal to 100
6. 12 * 46 () is equal to 64 * 21 It's solved by equation.
7. Add appropriate operation symbols or brackets to the left of the equal sign of the following questions to make the result exactly equal to the number 4 = 20 on the right 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6=1996
8. Add appropriate operation symbols and brackets to the left of the equal sign of the following questions to make the calculation result exactly equal to the number on the right 5-5-5-5=0 5○5○5○5=1 5○5○5○5=2 5○5○5○5=3 5○5○5○5=10 5○5○5○5=30 5×5×5×5=100 5○5○5○5=150 Wrong 5○5○5○5=0 5○5○5○5=1 5○5○5○5=2 5○5○5○5=3 5○5○5○5=10 5○5○5○5=30 5○5○5○5=100 5○5○5○5=150
9. Add appropriate budget symbols and brackets to the left of the equal sign of the following questions to make the calculation result exactly equal to the number on the right 3（）3（）3（）3= 5 3（）3（）3（）3= 6 3（）3（）3（）3= 7 3（）3（）3（）3=8 3（）3（）3（）3= 2 3（）3（）3（）3= 4
10. 123456789 each number can only be used once. After addition and subtraction, it is equal to 5,
11. Put the nine numbers 1 ~ 9 in the following box (without repetition or omission) so that the sum of the three numbers in each horizontal, vertical and horizontal direction is equal. Given that the position of number 8 is (3,1), write other numbers 3 □□□ 2 □□□ 1 □□8 1 2 3
12. Fill in the box with numbers 1 to 9, which cannot be repeated □/□=□/□=□□□/□□ □/□=□/□=□□□/□□ □+□=□ □-□=□ □*□=□ □+□=□ □-□=□ □*□=□
13. Fill 1 to 9 in the box respectively, the equation holds, and the number is not repeated □ ^ ^ ^ ^ = □ × ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
14. Fill in the box below with 1-9 numbers, which can't be repeated. Division is equal to division = () division = 2
15. Fill the numbers 1 to 9 in the small boxes so that the sum of the three numbers on each line is equal to 15
16. Vertical and horizontal nine grid, 1 ~ 9, nine numbers filled in the grid, so that the horizontal, vertical, oblique addition is equal to 15, can not be repeated, I want to answer in detail! I only need the detailed answer, how to solve it ~ don't just give me the answer, I will search for the answer myself!
17. About "123456789 nine numbers fill in the box () = half * () = one third * ()" I want specific solutions. I know
18. Fill in 1.2.3.4.5.6.7.8.9 in the box
19. 123456789 fill in the box with nine numbers () = half * () = one third * () ()
20. Please fill in the blanks of the following formula with the seven numbers of 0, 1, 2, 3, 4, 5 and 6 to make the equation hold