A family decides to have children until it has three children of the same gender. Assume P(boy) = P(girl) = .5. What is the pmf of X, the number of children in the family?

You are holding a fundraiser for cancer research. a certain charity organization has agreed to contribute \$10$10 more than the amount of money you raise to cancer research. in the equation below, ff is the amount of money that you raise during your fundraiser, and cc is the amount of money that the charity organization donates.