问题
填空题
用0，1，2，3，4这五个数字，可以组成没有重复的5位奇数的个数为 ．
答案
36
题目分析：最后一位数字为1或3，第一位数字剩下3种情况，其余的数全排列，即
.
搜题请搜索小程序“爱下问搜题”
用0，1，2，3，4这五个数字，可以组成没有重复的5位奇数的个数为 ．
36
题目分析：最后一位数字为1或3，第一位数字剩下3种情况，其余的数全排列，即.
Are you thinking about what to do in your free time? Come and join us —Youth (青年) Club! Join in lessons and activities. It’s fun! For more information, call 34789256 !
A. Monday. B. Sunday. C. Friday. 小题2: Rose is free after 6:20 p. m. She can take__________ . A. Computer lessons. B. Cooking lessons. C. Both computer and cooking lessons. 小题3:. Dick wants to swim after playing basketball. He can go to the club on __________. A. Monday and Wednesday. B. Monday and Sunday. C. Saturday and Sunday. 小题4: You can enjoy music in the club__________. A. Once a month. B. Once a week. C. Twice a month. 小题5: What should you do if you want to know the cost of the lessons? __________ A. Call 347 89256. B. Join all the clubs. C. read the posters carefully. |