Question

Gaseste intrusul (in fiecare sir dat gaseste fractia care nu este egala cu celelalte) a)50supra 40,60 supra 48,10supra8,6supra4,15supra12,25supra20,5supra4

Answer 1

a. 50/40=60/48
⇒50·48=40·60
⇒2400=2400[A];
50/40=10/8
⇒50·8=40·10
⇒400=400[A];
50/40=6/4
⇒50·4=40·6
⇒200=240[F];
50/40=15/12
⇒50·12=40·15
⇒600=600[A];
50/40=25/20
⇒50·20=40·25
⇒1000=1000[A];
50/40=5/4
⇒50·4=40·5
⇒200=200[A];
⇒Intrusul este fractia ordinara 6/4;

Answer 2

intrusul este: 6 supra 4