A price list from my neighborhood grocery store: Thumb tacks ---1 cents Tootsie Roll ----5 cents Lollipop -----5 cents Mints ----5 cents    encil -----5 cents Safety pin ----5 cents Bubble gum -----5 cents magnet ----10 cents Marker -----10 cents eraser ----10 cents Beef Jerky ----25 cents nail file ----25 cents Candy bar ---50 cents can of soda ----50 cents Note book ----50 cents These 15 items cost $ 2.61, but money spent for each item was rounded to $1, then it costs $15. What a ridicules question? So, look, ETS wants us to pay more. Are you ready for it? 上面是有个网友关于254题的补充. 我有点怀疑原题会不会是要四舍五入, 如果是,那1 cent的应该是算零?
210~231 JJ第12題 12.Waht is the median in a set that consists of the number that is the multiple of 9, the largest one is less than 100? ANS:54 這題怎麼求出來的,,那個set是指1~100嗎?
这道题猜测是1-100之间有11个9的倍数, 则median是第6个9的倍数,即54.
忽然有疑问, 零是9的倍数吗?
[此贴子已经被作者于2005-1-8 13:44:05编辑过] |