Probability from a pack of balls
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 at 11:48
Md Kashif
1
add a comment |
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 at 11:48
Md Kashif
1
4
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05
add a comment |
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 at 11:48
Md Kashif
1
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 at 11:48
Md Kashif
1
asked Nov 24 at 11:48
Md Kashif
1
asked Nov 24 at 11:48
Md Kashif
1
asked Nov 24 at 11:48
Md Kashif
1
asked Nov 24 at 11:48
Md Kashif
1
1
4
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05
add a comment |
4
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05
4
4
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05
add a comment |
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4
What have you tried? What, for example, is the probability that the first is red or white?
– lulu
Nov 24 at 11:54
I've tried this this combination all analysis :10C2/75C2+30C2/75C2+(10C1*30C1)/75C2
– Md Kashif
Dec 2 at 7:05