Unless it is otherwise provided by the trust instrument, or an amendment thereof, or by court order, any power vested in three or more trustees may be exercised by a majority of such trustees and any power vested in two trustees shall be exercised by both of such trustees.

Source: SL 1943, ch 308 , § 11; SDC Supp 1960, § 59.0511 (1); SL 2011, ch 212 , § 14.