Luka has a bag containing 5 socks: 3 red, 1 white, and 1 black. He draws 1 sock out of the bag, replaces it, and then draws another sock. What is the probability that he will draw a black sock and then a red sock, P(black, then red)?
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Answer:
No. of red socks = 3
No. of white socks = 1
No. of black socks = 1
Total no. of socks = 3+ 1+1 = 5
He draws 1 sock and replaces it so no change in number of socks
Probability(B)= No. of black socks = 1
Total no of socks 5
After removing one sock the total no. of sock will decrease by one = 4
Probability(R)= No. of red socks. = 3
Total no.of socks 4
Hope it helps ☺️
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