public static CAUHOI KhoiTao(BIEUTHUC P, Random t)
{
CAUHOI kq;
kq.NoiDung = XuLyBieuThuc.XuatChuoi(P);
kq.TraLoi = new TRALOI[n_traloi];
for (int i = 0; i < n_traloi; i++)
{
kq.TraLoi[i] = XuLyTraLoi.KhoiTao(P, t);
}
kq.TraLoi[t.Next() % n_traloi].NoiDung = XuLyBieuThuc.TinhToan(P).ToString();
return(kq);
}
