Four members a school's first eleven cricket team are also in the first fourteen rugby team.

How many members play foe at least one of the two trams.

To find the number of members who play for at least one of the two teams, we need to add the number of members in the cricket team to the number of members in the rugby team and then subtract the number of members who play for both teams.

Let's denote:
C = number of members in the cricket team
R = number of members in the rugby team
B = number of members who play for both teams

From the given information, we know that C = 11 (the first eleven cricket team) and R = 14 (the first fourteen rugby team).

Therefore, the number of members who play for at least one of the two teams is: C + R - B = 11 + 14 - B = 25 - B.

However, we don't have information about the value of B, so we cannot determine the exact number of members who play for at least one of the two teams.