[填空题]
106 runners at a marathon event weregzvd8b-s9 sf.w;e)a t asked through whicht (d*52qd9ox zvu2k*psir,t z media channels they received information about the marathon. The summary shows that 52 runtuo izv*z td9 x5*s(d2,k2q prners answered "TV advertising", 64 answered "social media" and 14 answered "others". Find the probability that a runner selected at random from the marathon received information about the marathon through:
1. both TV advertising and social media; ≈
2. only TV advertising. ≈
