Vrrau proba inmultirilor,
![Vrrau Proba Inmultirilor class=](https://ro-static.z-dn.net/files/df4/4bbf4bd2b707c417ec1096b5bcbd8781.jpg)
1. 16x15+13 = 240 + 13 = 253
2. 40x18 + 1 =720 + 1 = 721
3. 48x21 + 17 = 1008 +17 = 1025
4. 136x35 + 9 = 4760 + 9 = 4769
primele 3 sunt corecte . la a4-a ai gresit ceva