My try ( I am a beginner trying to solve this kind of problems using combinations ![:idea:]( "Idea")
\frac{C^5_3}{{(C^2_1)^5}} = 1/32
C^5_3 : number of combinations in which we obtain 3 H in 5 tosses
(C^2_1)^5 : number of combinations of T or H in 5 tosses
\frac{C^5_3}{{(C^2_1)^5}} = 1/32
C^5_3 : number of combinations in which we obtain 3 H in 5 tosses
(C^2_1)^5 : number of combinations of T or H in 5 tosses