??????????????? kounting numbers ????????????
????????? "kompute the sum"...just sae "sum" or "add"
iz zat the positiv, nonzero intetgers...1, 2, 3,... ????????
for a sequens av integers,
last number=start numer +(n-1)*stepsize
averaej=(start number +last number)/2
sum=n*averaej
for positiv integers, start=1, stepsize=1, & tri n=12
then, last=12, averaej=(1+12)/12=6.5, sum=78