jeanieb
28.07.2019 •
Mathematics
Suppose there are 21 students in your class. if the teacher draws 2 names at random, what is the probability that you and your best friend will be chosen? 2/21 1/20 1/105 1/210 explain how you got your answer! ty!
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Ответ:
Probability of your friend chosen first = 1/420 also.
So the required probability = 1/420 + 1/420 = 1/210 Answer
Its D
Ответ:
C (0, 0)
Step-by-step explanation:
JUST LOOK at the graph. The highlighted portion is all the coordinates that are all solutions. The white portion is the opposite.