1. . 200, , . . 842
2. First 12 .. Sekond 9 .. , 5 , 390 .. First 18 . , Sekond 21 .., 692 .. .
. 21 First 15 Sekond
3. , , 51 , 99, . 2520 , - 16 20 . , . : 18 16 .
4. , , 30 . 150 . , , 51 . ? 44
5. (200!)? 49
6. , 7
3. : 42131
7. , ?
8. n 5 29 1, 27 36 4. n. 436
9. k
? : -5, -2, 2, 3, 4, 7.
10. 43 20x2 + 13 + 12 = 0 Î {-1/2, 3/2, 4}
11. x4 + 2x3 x 2 = 0 Î {1, -2}
12. x5 + 2x4 + 2x3 2x2 3x = 0 Î {-1, 0, 1}
13. , , 5. 14
14. , a b x3 + ax2 + 2x + b
x2 + x + 1. : a = 2, b = 1.
15. ,
. :
16. 2x2 y2 xy + x + 2y 6 = 0.
: (2, 2), (2, -2), (-2, 0), (-2, 4)
17. |2m 3| + |2 n| = 5
: (1, -2), (1, 6), (2, -2), (2, 6), (0, 0), (3, 0), (0, 4), (3, 4),
(-1, 2), (4, 2)
18. m2 + 23 = n2
: (11, 12), (-11, -12), (11, -12), (-11, 12)
19.
2(a 2)x2 + a(a + 1)x + 6 = 0 .
|
|
: Î { -1, 2 }
20. (2002, -32) (m, 0).
m, , a, b, m - ,
m 2002. 2001
21. (m, n), 2m + 47 < 22n 2n2 , 4n ³ 7m + 14.
: (1, 6), (1, 7), (2, 7)
22. , 5. , 5.
23. C . . 210. . 1920 . , .
: = { 6, 10, 14, 30, 42, 70, 105, 210 }
24. (6 2010). , 42 42 ( ).
: 1) , , , 4) ,
5) , 6) .
25. ( 6 2010). , 96/35 97/36, , .
:
1. 842
2. 21 First 15 Sekond
3. 18 16 .
4. 44
5. 49
6. 42131
7.
8. 436
9. -5, -2, 2, 3, 4, 7.
10. Î {-1/2, 3/2, 4}
11. Î {1, -2}
12. Î {-1, 0, 1}
13. 14
14. a = 2, b = 1.
15.
16. (2, 2), (2, -2), (-2, 0), (-2, 4)
17. (1, -2), (1, 6), (2, -2), (2, 6), (0, 0), (3, 0), (0, 4), (3, 4),
(-1, 2), (4, 2)
18. (11, 12), (-11, -12), (11, -12), (-11, 12)
19. Î { -1, 2 }
20. 2001
21. (1, 6), (1, 7), (2, 7)
22.
23. = { 6, 10, 14, 30, 42, 70, 105, 210 }
24. 1) , , , 4) ,
5) , 6) .
25.