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1 answer:
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Answer:
Step-by-step explanation:
Given:
Number of questions (N) = 16
Number of easy questions (E) = 8
Number of medium-hard questions (M) = 5
Number of hard questions (H) = 3
Now, the probability of getting the first question as easy question is given as:
Now, probability of getting the second question as easy question is given as:
Now, probability that the first two contestants will get easy questions is given by the product of . So,
Therefore, the probability that the first two contestants will get easy questions is
Answer:
x = 90
Step-by-step explanation:
- x -
x +
x = - 70
Multiply through by 45 ( the LCM of 9, 45, 5 ) to clear the fractions
- 40x - 4x + 9x = - 3150 , that is
- 35x = - 3150 ( divide both sides by - 35 )
x = 90