Question

Determinați numărul numerelor naturale cuprinse intre 134 si 245 divizibile cu 3.

Answer 1

$134:3=44~rest~2 \\ \\ 245:3=81~rest~2 \\ \\ Numerele~sunt:~3 \cdot 45~;~3 \cdot 46~;~3 \cdot 47~;~...~;~3 \cdot 81. \\ \\ In~total~sunt~81-45+1=37~numere.$

Answer 2

135,138,141,144,147,150,153,156,159, 162, 165,168, 171, 174, 177, 180, 183, 186, 189, 192, 195, 198, 201, 204, 207, 210, 213, 216, 219, 222, 225, 228, 231, 234, 237, 240, 243.⇒37 de numere