Sequenze

Data una certa sequenza di numeri bisogna individuare il prossimo valore (1,  2,  3,  4,  5,  …) oppure il valore mancante (1, 2,  …,  4,  5, 6)

  1. 1, 3, 5, 7, 9, ♥
  2. 1, 3, 6, 10, 15, 21, ♥
  3. 1, 4, 9, 16, 25, ♥
  4. 1, 8, 27, 64, 125, ♥
  5. 1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, 31131211131221, 13211311123113112211, ♥
  6. 2, 3, 4, 12, 6, 23, 8, 36, 10, 51, 12, ♥
  7. 2, 3, 5, 7, 11, ♥
  8.  2, 3, 7, 13, 27, ♥, ♥
  9. 2, 4, 6, 8, 10, ♥
  10. 2, 8, 4, 7, 8, 6, 16, 5, ♥, ♥
  11. 3, 5, 9, 17, 33, 65, ♥
  12. 5, 14, 32, 68, 140, 284, ♥
  13. 6, 7, 4, 6, 5, 4, 5, 5, 2, ♥
  14. 7, 8, 10, 14, 22, 38, 70, ♥
  15. 8, 15, 29, 57, 113, 225, ♥
  16. 9, 18, 16, 14, 23, 10, ♥, ♥
  17. 11, 12, 25, 76, 77, 155, 466, 467, ♥
  18. 11, 33, 21, 63, 51, 153, ♥, ♥
  19. 16, 152, 32, 76, 64, 38, 128, ♥, ♥
  20. 19, 22, 31, 58, ♥
  21. 20, 42, 36, ♥, ♥, 74, 68, 90
  22. 23, 64, 55, 70, ♥, ♥, 117, 158
  23. ♥, ♥, 37, 62, 42, 65, 47, 68
  24. 42, 86, 74, 32, ♥, ♥, 22, 66
  25. ♥, ♥, 44, 41, 36, 33, 28, 25, 20
  26. 60, 95, 52, ♥, ♥, 78, 112, 147
  27. 79, 96, 89, 106, 99, 116, ♥
  28. 86, 105, 78, ♥, ♥, 88, 106, 125
  29. 87, 73, 103, 89, ♥, 105, 135, ♥
  30. 200, 196, 180, 116, ♥

A volte compaiono le lettere dell’alfabeto oppure lettere e numeri

Lettere (21)

  1. A, T, ♥, M, H, ♥
  2. D, T, E, R, F, P, G, ♥
  3. ♥, P, L, F, B
  4. ♥, Q, N, I, F
  5. S, Q, N, H, ♥, T
  6. V, S, O, L, F, ♥

Lettere (21) e numeri

  1. B, 43, V, 36, Q, 31, N, 24, ♥, ♥
  2. B, 76, O, 64, C, 52, P, 40, ♥, ♥
  3. E, 114, G, 96, I, 78, ♥, 60, O, ♥
  4. H, 111, L, 93, N, 75, ♥, 57, R, ♥
  5. O, 64, I, 32, E, 16, ♥, ♥
  6. ♥, ♥, T, 7, Q, 11, N, 15, I

 

Risorse online

  1. OEIS – The On-Line Encyclopedia of Integer Sequences
  2. BASE Cinque: Serie e sequenze di numeri
  3. Concorsando – Guida sulle serie numeriche – Guida sulle serie alfanumeriche – TEST DI LOGICA

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