A jar contains 68 marbles, of which 26 are blue, 29 are red, and the rest are green. What is the ratio of green marbles to all m
1 answer:
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Answer: a) see image (below)
b) S ∩ M = 237
c) S U M = 598
<u>Step-by-step explanation:</u>
b) Total students = 685
Not sports or music = 87
Sports Total = 385
Music Total = 450
Both Sports and Music is their intersection:
S ∩ M = S + M + N - T
= 385 + 450 + 87 - 685
= 237
c) Sports only = S - (S ∩ M)
= 385 - 237
= 148
Music only = M - (S ∩ M)
= 450 - 237
= 213
Sports OR Music is their union:
S U M = S + M - (S ∩ M)
= 385 + 450 - 237
= 598
Answer:
Step-by-step explanation:
Number of red balls = 4
Number of green balls = 6
Total number of balls = 6+4 =10
Probability of drawing a green marble is given as
⇒
⇒
The ball is replaced after drawing.
Probability of drawing a green ball a second time will be:
⇒
⇒
Thus, probability of drawing 2 green balls with replacement can be given as:
⇒ (Probability of drawing a green marble) (Probability of drawing a green ball a second time)
⇒
⇒
Simplifying fraction by dividing numerator and denominator by their GCF.
⇒
⇒ (Answer)