To be sure of getting a pair of socks of the same color, you must place yourself in the worst position.
When you take out socks without lookong (radomly), the worst scenary is that the first time you take out a sock of a color and in the second fime you take out a sock of different color. Then, the next time (the third time) you necessarily take a sock that match one of the two taken out previously, and so have a pair.
So, the answer is that you must take out three socks to be sure that you have a pair.
Answer:
35/68
Step-by-step explanation:
The first box contains 3 orange balls and 4 black balls.
The second box contains 5 orange balls and 6 black balls
Total number of boxes = 2
Let Pr(F) be the probability that the first box is picked.
Let Pr(S) be the probability that the second ball is picked
Let O be the orange ball selected
Pr(F) = 1/2
Pr(S) = 1/2
Pr(O|S) = n(O) / n(S)
= 5/ 6+5
5/11
Pr(O|F) = n(O) / n(F)
= 3/ 4+3
= 3/7
Pr(S|O) = [Pr( O|S).P(S)] / [Pr( O|S).P(S) + Pr( O|F).P(F)]
= (5/11*1/2) / (5/11*1/2) +(3/7*1/2(
= (5/22) / (5/22 + 3/14)
= (5/22) / (136/308)
= 35/68
Length = 4 + x
Width = x
Height = x2 + 1
The polynomial that represents the volume of Box 3 has a degree of
If it is perpendicular to the axis, then a circle. If it is at an angle, then an ellipse. If it is parallel to the axis, then two parallel lines. These aren't mine but I hope they help you
Answer: its 49
Step-by-step explanation:
