Contracts with members of society who are minors
28.  The minority of a person duly admitted as a member of any society shall not preclude that person from executing any instrument or giving a discharge necessary to be given under this Act or the Rules, and shall not be a ground for invalidating or avoiding a contract entered into by any such person with the society, and the contract entered into by that person with the society, whether as principal or as surety, shall be enforceable at law or against that person notwithstanding his minority, except that this section shall not apply to school co-operatives.