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GENERAL RULE
A general rule is to subtract the probabilities with an even number of components inside the parentheses and add those with an odd number of components (one or three) to arrive at the probability of events.
Example
Consider a bag containing 4 white and 5 black balls. A man draws 3 balls at random; let us see what is the probability that all three are black?
The total number of ways in which 3 balls can be drawn is 9C3and the number of ways of drawing 3 black balls is 5C3therefore the probability of drawing 3 black balls is given by
P(All three are black)
need answers
Example: Find out the radius of convergence for the following power series. Solution : Therefore, in this case we have, a n = ((-3) n )/(n7 n+1 ) a n+1 = (
cos inverse x -cos inverse 2x=pie\2
at what price a 6.25%rs 100 share be quoted when the money is worth 5%
Awhat is polygonesk question #Minimum 100 words accepted#
Using the example provided below, if the measure ∠AEB = 5x + 40 and ∠BEC = x + 20, determine m∠DEC. a. 40° b. 25° c. 140° d. 65° c. The addition of the measurem
I am a number yell my identity subtract 20 from me and add 30 make the total twice to reach century you still need eight
Why -2=-x , is x=2
need help
0+50x1-60-60x0+10
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