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A child-care center has a supply of bicycles, each with 2 wheels, and tricycles, each with 3 wheels, for the children to use. The number of bicycles in the supply is odd, and the total number of wheels on all the bicycles and tricycles is 31. Which of the following could be the total number of bicycles and tricycles in the supply?
Indicate all such numbers.
Indicate all such numbers.
B,D显示答案
· 相关考点
1.4.1 奇偶性的定义与运算
1.4.1 奇偶性的定义与运算
以上解析由 考满分老师提供。
