1. .
2. :
:
1) 10 + 11 + 13 + 18 = () + () + () + () = ..
2) 6 + 8 + 14 + 17 = () + () + () + () = ..
3) 5 + 7 + 12 + 15 = () + () + () + () = .
4) 2 + 3 + 9 + 19 = () + () + () + () = ..
5) 1 + 4 + 16 + 20 = () + () + () + () = ..
3. .
-12 | -10 | -8 | -6 | -4 | -2 | +2 | +4 | +6 | +8 | + 10 | +12 | ||
4. .
:
7 :
(+3);
(+2);
(+1);
(0);
(-1);
(-2);
(-3).
:
+ 1 -1 -2 -3 | |||||||
1. , | +3 | +2 | + 1 | -1 | -2 | -3 | |
2. - | +3 | +2 | +1 | _1 | -2 | -3 | |
, - | |||||||
, | |||||||
3. , | +3 | +2 | + 1 | -1 | -2 | -3 | |
- | |||||||
4. | +3 | +2 | +1 | -1 | -2 | -3 | |
5. | +3 | +2 | +1 | -1 | -2 | -3 | |
, - | |||||||
, | |||||||
6. | +3 | +2 | +1 | -1 | -2 | -3 | |
7. | +3 | +2 | + 1 | -1 | -2 | -3 | |
8. , | +3 | +2 | +1 | -1 | -2 | -3 | |
9. | +3 | +2 1 | +1 | -1 | -2 | -3 | |
10. | +3 | +2 | +1 | -1 | -2 | -3 | |
11. , | +3 | +2 | +1 | -1 | ~2 | -3 | |
12. | +3 | +2 | +1 | -1 | -2 | -3 | |
13. | +3 | +2 | +1 | -1 | -2 | -3 | |
14. | +3 | +2 | +1 | -1 | -2 | -3 | |
15. | +3 | +2 | +1 | -1 | -2 | -3 | |
16. | +3 | +2 | +1 | -1 | -2 | -3 | |
17. | +3 | +2 | +1 | -1 | -2 | -3 | |
18. , | +3 | +2 | +1 | -1 | -2 | -3 | |
19. | +3 | +2 | +1 | -1 | -2 | -3 | |
20. | +3 | +2 | +1 | -1 | -2 | -3 |
|
|