Question

a bag has 5 red marbles 6 blue marbles and 4 black marbles what is the probabaility of picking a blue marble replacing it and then picking a red marble

Answer 1

is it B

Answer 2

either a c or b

Answer 3

here @SQL_Server

Answer 4

Total no of marbles = 15
No of blue marbles = 6
No of red marbles = 5
Probability of picking a blue marble = 6/15 = 2/5
Replace that blue marble.
Now, probability of picking a red marble = 5/15 = 1/3
The probability of picking a blue and a red marble is (2/5)*(1/3) = 2/15

Answer 5

can you help me with one more?

Answer 6

So option c

Answer 7

Post another question

Answer 8

Option b and d

Answer 9

thanks:)

Answer 10

You're welcome:)