There seems to be something wrong with the question. You can't essentially select a team of 11 players with 4 bowlers out of a pool of 11 players which has 5 bowlers.
So, I guess there is a number missing in the question. It should ideally look like - "In how many ways can one select a cricket team of 11 players out of "x number of players" of which 5 players are bowlers,so that each cricket team of 11 players has 4 bowlers?
"x number of players" represents the pool of players from which we can select.