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r-ruslan [8.4K]
3 years ago
6

A jar contains 6 red marbles numbered 1 to 6 and 4 blue marbles numbered 1 through 4. A marble is drawn at random from the jar.

Find the probability of the given event as a simplified fraction.
A. The marble is red
b. The marble is odd-numbered
c. The marble is red and odd-numbered
Mathematics
1 answer:
ale4655 [162]3 years ago
3 0
A Can you help me with these questions
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We have to find the expected value for the PlayBall lottery. 
The price of the ticket = $1
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Now we have to find the probability of winning and losing.

Number of letters from A to T = 20
Number of digits from 0 to 9 = 10

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Probability of picking up the same number that was picked on that day = 1/10

Thus, the Probability of picking up the same letter and same number that was picked on that day = \frac{1}{20}* \frac{1}{10}= \frac{1}{200}

Thus, the probability of winning = 1/200

The probability of losing = 1- \frac{1}{200}=\frac{199}{200}

The expected value E for the PlayBall lottery will be:

E= \frac{1}{200}(249)- \frac{199}{200}(1) \\  \\ &#10;E= \frac{1}{4}  \\  \\ &#10;E=0.25

Thus, the option C gives the correct answer
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What is the value of x in this triangle?
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Eight athletes are entered in the 220 meter
soldier1979 [14.2K]

Answer:

8!=40320

Step-by-step explanation:

SInce their are 8 athletes and 8 positions we can assume this: The first sprinter has 8 positions to end in, the next has 7 places to finish in, the third has 6 places and so on... Using this we can multiply these possibilities to find that the possibilities are 8×7×6×5×4×3×2 which results in 40320 (this function is known as a factorial and denoted !).

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3 years ago
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