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3 5

1. , , , 63.

2. 15 . , , . ? ( .)

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3. 4 , .

 

4. , ?

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5 4 , 4 , 18 . ?

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6. : 7 5 . . , ?

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7. . .

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8. , , , . , , , ?

 

 

9. 20 . ?

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10. 7 . ?

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11. 12 . , . , ?

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12. . , ?

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13. , . , . .

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14. 2 , 2 , 2 , 2 . ?

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15. 10 . ?

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16. . , . ?

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17. , . 2 . ?

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18. 1, 2, 3 : , . 1 2 . 1. ?

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19. :

, 1?

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20. : . , , . . . ?

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21. , :

9 9 9 = 2 9 9 9 = 90
9 9 9 = 10 9 9 9 = 9
   

 

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