3 3 3 3 3=1,2,3,4,5,6,7,8,9,10在三中间加符号使等式成立答案有很多种,有几种就写几种,求正确,求数量_数学解答

3 3 3 3 3=1,2,3,4,5,6,7,8,9,10在三中间加符号使等式成立
答案有很多种,有几种就写几种,求正确,求数量

人气：159 ℃　时间：2019-08-16 22:25:49

解答

(3 + 3 + 3) / 3 / 3 = 1
(3*3 + 3) / (3 + 3) = 2
3*3*3/3/3 = 3
(3 + 3 + 3 + 3)/3 = 4
3/3 + 3/3 + 3 = 5
(3*3 + 3*3)/3 = 6
[(3 + 3)*3 + 3]/3 = 7
(3*3*3 - 3)/3 = 8
3*3 + (3-3)*/3 = 9
(3*3*3 + 3)/3 = 10