a jar consists of blue red and green marble. the probability of each of them is 2/7 , 3K and 5/2k. find the value of k
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Answer:
k=(10/77)
Step-by-step explanation:
the sum of all possible probabilities is 1
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Probabality of drawing a blue marble=2/7
Probability of drawing a red marble=3k
Probability of drawing a green marble=5/2k
Since the jar has only red, green and blue marbles, their individual probabilities will add up to 1.
Thus, 2/7+3k+5/2k=1
=>(6k+5k)/2=1-2/7
=>11k/2=(7-2)/7
=>11k/2=5/7
=>k=5/7×2/11
=>k=10/77
Thus, value of k=10/77
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