|
|
.px1 {
BORDER-RIGHT: #999999 1px solid; BORDER-TOP: #999999 1px solid; BORDER-LEFT: #999999 1px solid; BORDER-BOTTOM: #999999 1px solid
}
BODY {
FONT-SIZE: 12px; FONT-FAMILY: 宋体
}
TD {
FONT-SIZE: 12px; FONT-FAMILY: 宋体
}
TH {
FONT-SIZE: 12px; FONT-FAMILY: 宋体
}
BODY {
MARGIN: 0px
}
A {
FONT-SIZE: 12px; COLOR: #000000
}
A:link {
TEXT-DECORATION: none
}
A:visited {
COLOR: #000000; TEXT-DECORATION: none
}
A:hover {
COLOR: #910200; TEXT-DECORATION: underline
}
A:active {
COLOR: #910200; TEXT-DECORATION: none
}
一年级趣味数学
一个农村少年，提了一筐鸡蛋到市场上去卖。他把所有鸡蛋的一半加半个，卖给了第一个顾客；又把剩下的一半加半个，卖给了第二个顾客；再把剩下的一半加半个，卖给了第三个顾客??当他把最后剩下的一半加半个，卖给了第六个顾客的时候，所有的鸡蛋全部卖完了，并且所有顾客买到的都是整个的鸡蛋。请问：这个少年一共拿了多少鸡蛋到市场上去卖？
半个鸡蛋怎么卖呢？这个题看起来难，其实简单。用倒推法，问题一下就解决了。要紧的是要想清楚，第六次的一半加半个只能是一个鸡蛋。倒推法简便可靠，是一种解决问题的好方法。
HTML {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
BODY {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
A {
COLOR: #000; TEXT-DECORATION: none
}
A:hover {
COLOR: red; TEXT-DECORATION: underline
}
IMG {
BORDER-TOP-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px
}
.AdBox {
FONT-SIZE: 12px; OVERFLOW: hidden; WIDTH: 340px; POSITION: relative; HEIGHT: 142px
}
.AdBox {
BORDER-RIGHT: #fe0000 1px solid; PADDING-RIGHT: 9px! important; BORDER-TOP: #fe0000 1px solid; PADDING-LEFT: 9px! important; PADDING-BOTTOM: 0px! important; OVERFLOW: hidden; BORDER-LEFT: #fe0000 1px solid; PADDING-TOP: 4px! important; BORDER-BOTTOM: #fe0000 1px solid
}
.AdBox DIV {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
.AdBox H4 {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
.AdBox DL {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
.AdBox DT {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
.AdBox DD {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px
}
.AdBox H4 {
FONT-WEIGHT: 500; FONT-SIZE: 20px; OVERFLOW: hidden; TEXT-INDENT: 3.8em; LINE-HEIGHT: 23px; FONT-FAMILY: "黑体"; POSITION: relative; HEIGHT: 20px
}
.AdBox H4 A {
COLOR: #c6080a
}
.AdBox H4 IMG {
LEFT: -3px; POSITION: absolute; TOP: -1px
}
.AdBox DL {
MARGIN-TOP: 3px; OVERFLOW: hidden; HEIGHT: 120px
}
.AdBox DT {
WIDTH: 176px; HEIGHT: 100px
}
.AdBox DD {
MARGIN-TOP: 0px! important; FLOAT: left; OVERFLOW: hidden; HEIGHT: 18px; TEXT-ALIGN: center
}
DD#ImgTit {
MARGIN-TOP: 0px; WIDTH: 176px
}
DD#InfSrc {
MARGIN-TOP: 0px! important; PADDING-LEFT: 9px; BACKGROUND: url(file:///I|/images/K6AdLi.gif) no-repeat 10px 5px; MARGIN-LEFT: -1em; WIDTH: 10em; TEXT-ALIGN: center
}
A#InfUrl {
DISPLAY: block; HEIGHT: 18px
}
DD#InfSrc A {
COLOR: #000000
}
DD#More A {
COLOR: #000000
}
DD#InfSrc A:hover {
COLOR: red
}
DD#More A:hover {
COLOR: red
}
DD#More {
MARGIN-TOP: 0px! important; BACKGROUND: url(file:///I|/images/K6AdLi.gif) no-repeat 1em -33px; MARGIN-LEFT: -1em; TEXT-INDENT: 1.5em
}
.AdBox UL {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none
}
.AdBox UL LI {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none
}
.AdBox UL {
RIGHT: -12px; OVERFLOW: hidden; WIDTH: 14em; POSITION: absolute; TOP: 32px; HEIGHT: 100px
}
.AdBox UL LI IMG {
MARGIN-TOP: -5px; RIGHT: -2px; POSITION: relative; TOP: -2px
}
.AdBox UL LI {
BACKGROUND: url(file:///I|/images/K6AdLi.gif) no-repeat left 8px; TEXT-INDENT: 0.7em; LINE-HEIGHT: 20px; HEIGHT: 20px
}
.kw21 {
COLOR: #203a85
}
.kw21 A:link {
COLOR: #203a85
}
.kw21 A:visited {
COLOR: #203a85
}
.kw21 A:hover {
COLOR: #000
}
40406.html
(16.6 KB, 下载次数: 3)
|
-
134900_4c5b61e76198106.jpg
-
134855_4c5b61e75fe2906.jpg
-
145025_4c5b6196c3ed506.jpg
-
152119_4c5b61976193506.jpg
-
145619_4c5b6196d86f206.gif
|
发表于 2016-8-10 18:52:08
