---What number should appear next after eighty one?392781?---It's ________.A.two hundred and forty-nineB.two hundred and forty-sevenC.two hundred and forty-eightD.two hundred and forty-three
网友回答
D解析此题比较新颖,它既考查了英语数词知识又考查了数学知识,要求考生找出所给数字的规律.通过观察这几个数字,不难找出它们的规律,即后面数字是前面数字的三倍,因此,81后的数字是243.