Răspuns:
a)a+b=156
K+k+1=156/-1
2k=155/:2
K=77,5=>k+1=77,5+1=78,5
proba:77,5+78,5=156
b)a+b=600
K+k+1=600/-1
2k=599/:2
K=299,5=>k+1=300,5
proba: 299,5+300,5=600
c)a+b=1190
K+k+1=1190/-1
2k=1189/:2
K=594,5=>k+1=595,5
proba:594,5+595,5
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