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cate nr sub forma 2ab au suma cifrelor 10

Răspuns :

a=0⇒b=8
a=1⇒b=7
a=2⇒b=6
a=3⇒b=5
a=4⇒b=4
a=5⇒b=3
a=6⇒b=2
a=7⇒b=1
a=8⇒b=0
sunt 9 numere 217,226,235,244,253,262,271,280
2ab=262,271,244,253,235,226,217,255,282