Mathematics problem [6,2] = 10 [4,5] = 3 [18,9] = 27 [15, x] = 24 find x

Mathematics problem [6,2] = 10 [4,5] = 3 [18,9] = 27 [15, x] = 24 find x

6 + (6-2) = 10 4 + (4-5) = 3 18 + (18-9) = 27, so 15 + (15-x) = 24 x = 6

Math problem: 4 children share a watermelon, a score of 2 / 9, B score of 4 / 18, C score of 6 / 27, D score of 8 / 36
Four children eat a watermelon, a score of 2 / 9, B score of 4 / 18, C score of 6 / 27, D score of 8 / 36
Do the four children share as many watermelons? Why? Is the watermelon finished?

A score is 2 / 9
4 / 18 = 2 / 9 for B
C score 6 / 27 = 2 / 9
Ding Fen gets 8 / 36 = 2 / 9
2/9+2/9+2/9+2/9=8/9

3 6 9 12 15 18 21 24 27 add up the three numbers of horizontal, vertical and oblique rows to get 45

18 3 24
21 15 9
6 27 12

1,2,3,4,5,6,7,8,9,1o,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25.26.27.28.29.30.31.32.33
Each group has 12 numbers. How many groups can you spell

The result is = 33 * 32 * 31 * 30 * 29 * 28 * 27 * 26 * 25 * 24 * 23 * 22