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S=1/8+1/24+.....1/9800
a)cati termeni are suma
b)Aratati ca 0,24


Răspuns :

a) 9800*2= 19600
n*0,24=1
b) n*0,24/100
(n*100)*24=1
n*2400=1
n=2400*1
n=2400