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1+2+3+ +50=1+2+3. +50=


1+2+3+ 199=



1+2+3+ 600=

vreau si in coloana
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Răspuns :

1Larisa284

FORMULA:

☆n(n+1)/2☆

50(50+1)/2=50×51/2=2550/2=1275

199(199+1)/2=199×200/2= 39.800/2= 19.900

600(600+1)/2=600×601/2= 360.600/2 = 180.300

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