作业帮3个5,1个1,如何做24点?
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3个5,1个1,如何做24点?
运用加,减,乘,除四种运算和括号,如何由三个5和一个1得到24?(每个数只能用一次)
运用加,减,乘,除四种运算和括号,如何由三个5和一个1得到24?(每个数只能用一次)
1:5 × (5 - 1 ÷ 5)
2:5 × (5 - (1 ÷ 5))
3:5 × (5 - 1 ÷ 5 )
4:5 × (5 - (1 ÷ 5 ))
5:(5 - 1 ÷ 5 ) × 5
6:(5 - (1 ÷ 5 )) × 5
7:(5 - 1 ÷ 5) × 5
8:(5 - (1 ÷ 5)) × 5
9:5 × (5 - 1 ÷ 5)
10:5 × (5 - (1 ÷ 5))
11:(5 - 1 ÷ 5) × 5
12:(5 - (1 ÷ 5)) × 5
2:5 × (5 - (1 ÷ 5))
3:5 × (5 - 1 ÷ 5 )
4:5 × (5 - (1 ÷ 5 ))
5:(5 - 1 ÷ 5 ) × 5
6:(5 - (1 ÷ 5 )) × 5
7:(5 - 1 ÷ 5) × 5
8:(5 - (1 ÷ 5)) × 5
9:5 × (5 - 1 ÷ 5)
10:5 × (5 - (1 ÷ 5))
11:(5 - 1 ÷ 5) × 5
12:(5 - (1 ÷ 5)) × 5