Petru intra in apartament.

A. Bile

In holul de la intrare are un cosulet cu bile albe si negre, mai multe decat 6, un element de decoratiune interioara primit cadou de la prieteni acum ceva timp. Rasturnatul numarului de bile este produsul dintre numarul de bile albe si numarul de bile negre. Cate bile albe si cate bile negre sunt?

Nota: Prin rasturnatul unui numar se intelege numarul rasturnat atat orizontal cat si vertical, unde cifrele sunt considerate in format digital de ceas. Spre exemplu: 169 devine 691, 691 devine 169.

Sursa: M.Gardner

Petru gets in his apartment.

A. Balls

At the entrance, he has a small basket containing white and black balls, in total more than 6, an interior design element got as present from his friends some time ago. The number of balls overturned is the number of white balls times the number of the black balls. How many white and how many black balls are in the basket?

Note: By overturned means both horizontally and vertically, where the digits are considered digital; e.g.: 169 becomes 691, 691 becomes 169.

Source: M.Gardner