Question

Cate nr de 2 cifre dau restul 4 la impartirea cu 7.

Answer 1

11 18 25 32 39 46 53 60 67 74 81 88 95  13 cifre in total

Answer 2

X:7=c rest 4
x=7c+4, dau valori lui c de la 1 la 13 si obtin
x∈{ 11, 18, 25, 32, 39, 46, 53, 60, 67, 74, 81, 88, 95}