意大利防护洋舰:5,5,5,1算24

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5 × (5 - 1 ÷ 5)
{5 - (1 ÷ 5)} × 5
5 × (5 - (1 ÷ 5)
(5 - 1 ÷ 5) × 5

5 × (5 - 1 ÷ 5)
{5 - (1 ÷ 5)} × 5
5 × (5 - (1 ÷ 5)
(5 - 1 ÷ 5) × 5

no

5*5-1的5次方

5*(5-1/5)

{5 - (1 ÷ 5)} × 5