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)

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

Numeri

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

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

Le sequenze compaiono, con tante varianti,


RISORSE


Online

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

PDF

  1. Logica
  2. Serie numeriche, alfabetiche, alfanumeriche

Libri

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