Probability from a pack of balls
0
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Two balls are drawn,in succession,from a pack of 10 red,30 white,20 blue and 15 orange balls,replacement being made after each drawing.What's the probability that they're 'either red or white or both'?
probability
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
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add a comment |
0
$begingroup$
Two balls are drawn,in succession,from a pack of 10 red,30 white,20 blue and 15 orange balls,replacement being made after each drawing.What's the probability that they're 'either red or white or both'?
probability
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
$endgroup$
4
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05
add a comment |
0
0
0
$begingroup$
Two balls are drawn,in succession,from a pack of 10 red,30 white,20 blue and 15 orange balls,replacement being made after each drawing.What's the probability that they're 'either red or white or both'?
probability
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
$endgroup$
Two balls are drawn,in succession,from a pack of 10 red,30 white,20 blue and 15 orange balls,replacement being made after each drawing.What's the probability that they're 'either red or white or both'?
probability
probability
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
asked Nov 24 '18 at 11:48
Md KashifMd Kashif
1
1
4
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05
add a comment |
4
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05
4
4
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05
add a comment |
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4
$begingroup$
What have you tried? What, for example, is the probability that the first is red or white?
$endgroup$
– lulu
Nov 24 '18 at 11:54
$begingroup$
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
$endgroup$
– Md Kashif
Dec 2 '18 at 7:05