Mathematics, 18.01.2021 21:40 nya4657
An urn contains forty red chips and sixty white chips. Six chips are drawn out and discarded, and a sev- enth chip is drawn. What is the probability that the sev- enth chip is red
Answers: 3
![\left[\begin{array}{ccc}40\\i\\\end{array}\right]](/tpl/images/1043/6517/b1725.png)
![\left[\begin{array}{ccc}40\\6-i\\\end{array}\right]](/tpl/images/1043/6517/a88f9.png)
× ![\left[\begin{array}{ccc}40-i\\1\\\end{array}\right]](/tpl/images/1043/6517/a50fd.png)
/ ![\left[\begin{array}{ccc}100\\6\\\end{array}\right]](/tpl/images/1043/6517/1d3d0.png)
![\left[\begin{array}{ccc}94\\1\\\end{array}\right]](/tpl/images/1043/6517/f2950.png)
![\left[\begin{array}{ccc}40\\0\\\end{array}\right]](/tpl/images/1043/6517/2354b.png)
![\left[\begin{array}{ccc}60\\6\\\end{array}\right]](/tpl/images/1043/6517/be189.png)
×![\left[\begin{array}{ccc}40\\1\\\end{array}\right]](/tpl/images/1043/6517/bcc05.png)
+ ![\left[\begin{array}{ccc}60\\5\\\end{array}\right]](/tpl/images/1043/6517/ad19c.png)
×![\left[\begin{array}{ccc}39\\1\\\end{array}\right]](/tpl/images/1043/6517/6951f.png)
+ ......+ ![\left[\begin{array}{ccc}4\\6\\\end{array}\right]](/tpl/images/1043/6517/89d72.png)
![\left[\begin{array}{ccc}60\\0\\\end{array}\right]](/tpl/images/1043/6517/52f6d.png)
![\left[\begin{array}{ccc}34\\1\\\end{array}\right]](/tpl/images/1043/6517/13e40.png)
/ 
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An urn contains forty red chips and sixty white chips. Six chips are drawn out and discarded, and a...
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