C)+set+vuit+nou

El 7 es pot obtenir com a suma de nombres consecutius (3+4), el 9 també (2+3+4) però el 8 no.

Quins nombres es podran obtenir com a suma de nombres consecutius?
Corregit per Mar B || COMENTARI: Matías ha proposat descomposar 18 = 5 + 6 + 7 i també podia haver-lo descomposat com 3 + 4 + 5 + 6 (Cecilia)
 * = ===Resultat=== ||= ===Suma de nombres consecutius=== ||> ===Proposat per:=== ||
 * = 1 ||= --- És impossible -- ||> Laia T ||
 * = 2 ||= --- É s impossible --- ||> Maria B ||
 * = 3 ||= 1 + 2 ||> Laia C ||
 * = 4 ||= - És impossible --- ||> Cecilia ||
 * = 5 ||= 2 + 3 ||> Maria B ||
 * = 6 ||= 1 + 2 + 3 ||> Mar B ||
 * = 7 ||= 3 + 4 ||> Cecilia ||
 * = 8 ||= --- És impossible -- ||> Cecilia ||
 * = 9 ||= 2 + 3 + 4 ||> Cecilia ||
 * = 10 ||= 1 + 2 + 3 + 4 ||> Maria B ||
 * = 11 ||= 5 + 6 ||> Maria B ||
 * = 12 ||= 3 + 4 + 5 ||> Maria B ||
 * = 13 ||= 6 + 7 ||> Mar B ||
 * = 14 ||= 2 + 3 + 4 + 5 ||> Gerard G ||
 * = 15 ||= 7 + 8 ||> Arnau Go ||
 * = 16 || És impossible ||> Marc S i Joan R
 * = 17 ||= 8 + 9 ||> Maria B ||
 * = 18 ||= 5 + 6 + 7 ||> Matías ||
 * = 19 ||= 9 + 10 ||> Joan R ||
 * = 20 ||= 2 + 3 + 4 + 5 + 6 ||> Gerard G ||
 * = 21 ||= 10 + 11 ||> Mar B ||
 * = 22 ||= 4 + 5 + 6 + 7 ||> Oriol ||
 * = 23 ||= 11 + 12 ||> Laia T ||
 * = 24 ||= 7 + 8 + 9 ||> Helena ||
 * = 25 ||= 12 + 13 ||> Laia T ||
 * = 26 ||= 5 + 6 + 7 + 8 ||> Oriol ||
 * = 27 ||= 13 + 14 ||> Laia T ||
 * = 28 ||= 1 + 2 + 3 + 4 + 5 + 6 + 7 ||> Gerard G ||
 * = 29 ||= 14 + 15 ||> Laia T ||
 * = 30 ||= 9 + 10 + 11 ||> Helena ||
 * = 31 ||= 15 + 16 ||> Joan R ||
 * = 32 ||= És impossible ||> Marc S ||
 * = 33 ||= 10 + 11 + 12 ||> Arnau Go ||
 * = 34 ||= 7 + 8 + 9 + 10 ||> Helena ||
 * = 35 ||= 17 + 18 ||> Helena ||
 * = 36 ||= 11 + 12 + 13 ||> Laia C ||
 * = 37 ||= 18 + 19 ||> Joan R ||
 * = 38 ||= 8 + 9 + 10 + 11 ||> Oriol ||
 * = 39 ||= 19 + 20 ||> Helena ||
 * = 40 ||= 6 + 7 + 8 + 9 + 10 ||> Marc S i Mar B ||
 * = 41 ||= 20 + 21 ||> Helena ||
 * = 42 ||= 9 + 10 + 11 + 12 ||> Oriol ||
 * = 43 ||= 21 + 22 ||> Mar B ||
 * = 44 ||= 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 ||> Areia, Marc S i Arnau Ga ||
 * = 45 ||= 22 + 23 ||> Laia T ||
 * = 46 ||= 10 + 11 + 12 + 13 ||> Oriol ||
 * = 47 ||= 23 + 24 ||> Laia T ||
 * = 48 ||= 15 + 16 + 17 ||> Arnau Go ||
 * = 49 ||= 24 + 25 ||> Matías ||
 * = 50 ||= 11 + 12 + 13 + 14 ||> Gerard ||