xiaoming goes to five shop and sends all of his money.he onl
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/09 11:45:37
xiaoming goes to five shop and sends all of his money.he only knows in each shop he spends one yuan more than half the money before he goes to the shop.How much does he take before he goes shopping?______
用反推法
逛完第五个商店:身上的钱为0
逛完第四个商店:身上的钱为(0+1)X2=2
逛完第三个商店:身上的钱为(2+1)X2=6
逛完第二个商店:身上的钱为(6+1)X2=14
逛完第一个商店:身上的钱为(14+1)X2=30
故,答案是:30yuan
逛完第五个商店:身上的钱为0
逛完第四个商店:身上的钱为(0+1)X2=2
逛完第三个商店:身上的钱为(2+1)X2=6
逛完第二个商店:身上的钱为(6+1)X2=14
逛完第一个商店:身上的钱为(14+1)X2=30
故,答案是:30yuan
xiaoming goes to five shop and sends all of his money.he onl
Xiaoming is considering( )a shop.He wants to make some money
all day every day,he goes from shop to shop.
He never goes to shop with his mother.改错!
He often -----some money in his bag and goes out.
1.He ______ all his money to the poor people,and from that t
He often sends his articles to magazines and newspapers.英语转换
A driver stops his car in front of a shop and he wants to ha
He __ all his money to buy a bike
Jack sends five emails to his friends every day .中 five(提问)
He puts the bag on his s_and goes out of the shop?
He _____(put) on his jacket and goes to work.