How to calculate 28 out of 23 × 29

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• 1. 19 / 23 - 19 / 23 * 1 / 24
• 2. How about 25 * 23 / 24 Is the fraction calculation question 25 times 24:23 how to calculate simply? It seems that by multiplication, the allocation rate is about 25 * (1-1 / 24)
• 3. 1 + 5 of 6 + 11 of 12 + 23 of 24 + 47 of 48 + 95 of 96 + 191 of 192 Simple operation
• 4. What is 1 / 6 + 1 / 12 + 1 / 24 + ellipsis + 1 / 768 + 1 / 1536 emergency
• 5. What is 191 * 192192-192 * 191191
• 6. How much is 1536 grams
• 7. 7,3, - 3,7, and 12, - 13,3, - 1 are positive or negative 24 points It must be 7,3, - 3,7 and 12, - 13,3, - 1 Otherwise, no points will be given It can be positive or negative
• 8. 3, 4, 5 and 12 are 24 points
• 9. Calculate 24 points: 13, 3, 4, 8, 13, 12, 4, 8, 9, 4, 8, 12, 5, 5, 5, 5, 6, 6, 5,5,10,10 5,8,6,6 8,8,6,6 3,4,6,8
• 10. 7,7,7,12,11,11,11,12,10,11,12,13,2,3,4,5 are 24 points Four in a group. Thank you in advance
• 11. Simple calculation: 2 and 3 / 28 × 23 2 and 3 / 28 × 23
• 12. Simple calculation of 3 / 4 × 23 / 7 + 5 / 7 × 3 / 4
• 13. 23 * 8 of 33 and 24
• 14. Square of (X-Y) * (X-Y) cube of cube
• 15. The cube of (- X-Y) is the square of (x + y)
• 16. Cube of X, square of Y - x ^ 5=
• 17. Judge the odd and even numbers of the following functions, and explain the reasons; (1) f (x) = the cube of X / 1 (2) g (x) = the square of X, X belongs to (- 2,2] (3) the square of y = 2x-5
• 18. What is the minus 3 cube of 10
• 19. Cubic sum of 1 to 10,
• 20. 3pq+7pq-4pq+qp