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almond37 [142]
4 years ago
5

In a purse there are 30 coins, twenty one-rupee and remaining 50-paise coins. Eleven coins are picked simultaneously at random a

nd are placed in a box. If a coin is now picked from the box, find the probability of it being a rupee coin?
Option 1 : 4/7 Option 2 : 1/2 Option 3 : 2/3 Option 4 : 5/6
Mathematics
1 answer:
Masteriza [31]4 years ago
7 0
The solution to the answer is as follows:


<span>0votes</span><span>answered <span>Aug 8, 2015 </span><span><span>by </span>Shashi Kumar Evangelist <span>(3,082<span> points)</span></span></span></span><span>total coins 30
1 rupee coins 20
50 paise coins 10

1 rupee coin probability 20C11
11 coin are picked 30C11
<span>ans should be = 20C11/30C11 = 2/3</span></span>
I hope my answer has come to your help. God bless and have a nice day ahead!
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