4、6、7、9,如何算成24?
问题描述:
4、6、7、9,如何算成24?
算24点.
给出4、6、7、9,用加减乘除怎样才能算出24?
答
1:6 ÷ 4 ×(7 + 9)2:(6 ÷ 4) × (7 + 9)3:6 ÷ (4 ÷ (7 + 9))4:6 ÷ 4 ×(9 + 7)5:(6 ÷ 4) × (9 + 7)6:6 ÷ (4 ÷ (9 + 7))7:(6 × (7 + 9)) ÷ 48:6 × (7 + 9) ÷ 49:6 × ((7 + 9) ÷ 4)10:(6 × (9 + 7)) ...