P 2-dars. Natural sonlar bo'linishi. Tub va murakkab sonlar. Мусаев Хусан 1-3

78-83 Mashqlarda keltirilgan ko’p xonali sonlarning raqamlar yig’indisini toping:
78. 10111213…484950; 79. 21222324…585960; 80. 32333435…787980;
81. 30313233…9899100; 82. 12345678…515253; 83. 101102103…148149150
84. 121314…787980 soni necha xonali?
85. 787980…120121122 soni necha xonali?
86. 101102103…201202203 soni necha xonali?
87. 980981…102010211022 soni necha xonali?

Javoblar:
1. 180; 1200; 2. 58; 462; 3. 125; 2725; 4. 1) 50130, 82440; 2) 8760, 42033, 27705, 37461. 5. Tub: 17; 31; 41; 47; 241. Murakkab: 22; 35; 222; 308; 312; 6. 2⁹; 7. 2·7³; 8. 2·3²·37; 9. 3² ·5²·23; 10. 7·11·13; 11. 18; 12. 100; 13. 24; 14. 28; 15. 15; 16. 16; 17. 8; 18. 60; 19. 720; 20. 31; 21. 8; 22. 4; 23. 5; 24. 15; 25. 2, 8, 18, 32; 26. 74715; 27. 5664; 28. 423900; 29. 4628; 30. 2003400; 31. 1240575; 32. 388; 33. 10; 34. 0, 2, 4, 6, 8; 35. 2, 5, 8; 36. 2 va 6; 37. 0 va 5; 38. 2 va 8; 39. 6; 40. 8; 41. 0; 42. 9; 43. 2; 44. 0, 2, 4, 6, 8; 45. 1, 4, 7; 46. 0, 4, 8; 47. 0 va 5; 48. 4; 49. 0 va 8; 50. 4; 51. 0; 52. 3; 53. 4; 54. a= 0; b= 0, 1, 2, 3, 4, 5, 6, 7, 8, 9; 55. a= 5, b= 2, 5, 8; a= 0, b= 1, 4, 7; 56. a= 2, b= 2, 5, 8; a= 6, b= 1, 4, 7; 57. a=0, b=9; a=5, b=3; 58. a=0, b=4; a=5, b=8; 59. a=2, b=2; a=6, b=7; 60. a=3, b=1; 61. a=6, b=7; 62. a=2, b=0; a=6, b=4; 63. a=0, b=9; 64. 2, 3, 5, 7, 11, 13; 65. 59, 61, 67, 71, 73; 66. 5 ta; 67. 14 ta; 68. a= 2; 69. a= 1; 70. a= 1; 71. a= 1; 72. a= 5; 73. a= 3; 74. a= 1; 75. a= 2; 76. a= 3; 77. a= 1; 78. 285; 79. 324; 80. 476; 81. 736; 82. 351; 83. 380; 84. 138; 85. 113; 86. 309; 87. 152.