Page 20 - Digi notes maths
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C  C  C  C  C  C 2
6 22 6 22 6 22
1
0
4
2
3
C 4
28
 1 7315 6 1540 15 231    

20475



 20020
20475


15) At most 3 orange balls.
C  C 4  20460
28 6
4
C 4 20475
28













































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