--> . .

 


>> 11 .

.

 


25. ()

2. , (. 148):

.

, , ( ) . :

 25.

1. ? ?

2. ? ?

3. . , .

4. . , .

5. , . , .

6. 12 2,24 (. .). , .

7. , :

4 → O2612O62533 → (3)2 → O3 → O2.

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