Răspunsuri

2014-05-20T18:31:40+03:00
9-4=5
20-9=11
43-20=23
11-5=6
23-11=12
12x2=24
43+24=67
Gresit!! Este 376.
4 * 2 + 1 = 9
9 * 2 + 2 = 20
20 * 2 + 3 = 43
43 * 2 + 4 = 90
90 * 2 + 5 = 185
185 * 2 + 6 = 376
Al saptelea termen este 376 * 2 + 7 = 759
Multumesc frumos!
2014-05-20T18:35:48+03:00
Al saptelea numar este 759:
4+4=8+1=9
9+9=18+2=20
20+20=40+3=43
43+43=86+4=90
90+90=180+5=185
185+185=370+6=376
376+376=752+7=759