Section 9(1)(a) in The U.P. Municipalities Act, 1916
(a)the elected members, whose number shall, -(i)in the case of a Nagar Panchayat, be not less than 10, and not more than 24; and(ii)in the case of a Municipal Council, be not less than 25 and not more than 55, as the State Government may, by notification in the Official Gazette specify;