a fost răspuns

1 )105+110+115..........+345

2 )43+46+49+............+124


3 )200+210+220+..........+750



4 ) 29+30+31..........900

rapid va rog frumos
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Răspuns :

Alesiagrancea01id

Răspuns:

1)105+110+115. +335+340+345

Nr.termeni=(345-105):5+1=240:5+1=48+1=49

Termeni=(105+340)*9+345=

445*9+345=

4005+345=

4350

49:5=9 grupe

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