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20 de numere an concentru de la 0 la 1000

Răspuns :

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.
0+1=1
2+3=5
9+8=17
5+6=11
10+15=25
27+36=63
11+12=23
40+38=78
23+24=47
33+66=99
47+48=95
86+111=197
12+75=87
95+96=191
191+192=383
200+140=340
320+215=535
218+321=539
430+124=554
343+621=964....etc