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A word game has 100 tiles, 98 of which are letters and 2 of which are blank. The numbers of tiles of each letter are shown. You randomly draw 1 tile, set it aside, and then randomly draw another tile.Event A: The first tile is a consonant.Event B: The second tile is a vowel.Find the probability that both events A and B will occur. Round your answer to the nearest tenth.about $\%$

Question

A word game has 100 tiles, 98 of which are letters and 2 of which are blank. The numbers of tiles of each letter are shown. You randomly draw 1 tile, set it aside, and then randomly draw another tile.Event A: The first tile is a consonant.Event B: The second tile is a vowel.Find the probability that both events A and B will occur. Round your answer to the nearest tenth.about %\%

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Solution

To find the probability that both events A and B will occur, we need to follow these steps:

  1. Determine the total number of consonants and vowels:

    • Let's assume the number of consonants is C C and the number of vowels is V V .
    • The total number of tiles is 100, with 2 being blank, so there are 98 letter tiles.
  2. Calculate the probability of drawing a consonant first (Event A):

    • The probability of drawing a consonant first is C100 \frac{C}{100} .
  3. Calculate the probability of drawing a vowel second (Event B) given that the first tile was a consonant:

    • After drawing a consonant, there are 99 tiles left.
    • The number of vowels remains V V .
    • The probability of drawing a vowel second is V99 \frac{V}{99} .
  4. Calculate the combined probability of both events A and B:

    • The combined probability is the product of the individual probabilities: P(A and B)=P(A)×P(BA)=(C100)×(V99) P(A \text{ and } B) = P(A) \times P(B|A) = \left( \frac{C}{100} \right) \times \left( \frac{V}{99} \right)
  5. Substitute the values of C C and V V into the formula:

    • Let's assume C=56 C = 56 and V=42 V = 42 (these values are hypothetical and should be replaced with the actual counts from the game).
  6. Calculate the probability: P(A and B)=(56100)×(4299) P(A \text{ and } B) = \left( \frac{56}{100} \right) \times \left( \frac{42}{99} \right) P(A and B)=0.56×0.42420.2376 P(A \text{ and } B) = 0.56 \times 0.4242 \approx 0.2376

  7. Convert the probability to a percentage and round to the nearest tenth: 0.2376×10023.8% 0.2376 \times 100 \approx 23.8\%

Therefore, the probability that both events A and B will occur is approximately 23.8%.

This problem has been solved

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