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Gavin has two bags of tiles. The numbers and colors of the tiles are shown in the table.

\begin{tabular}{|c|c|c|}
\hline & Bag 1 & Bag 2 \\
\hline Black & 4 & 1 \\
\hline White & 6 & 4 \\
\hline Red & 3 & 3 \\
\hline Yellow & 5 & 1 \\
\hline
\end{tabular}

If Gavin randomly draws one tile from each bag, what is the probability that he will select two red tiles?

A. [tex]$\frac{2}{9}$[/tex]
B. [tex]$\frac{1}{18}$[/tex]
C. [tex]$\frac{1}{3}$[/tex]
D. 1


Sagot :

To determine the probability that Gavin will select two red tiles (one from each bag), we need to follow a series of steps:

1. Calculate the total number of tiles in each bag:
- Bag 1: The total number of tiles in Bag 1 is the sum of all tiles in Bag 1.
[tex]\[ \text{Total Bag 1} = 4 \text{ (black)} + 6 \text{ (white)} + 3 \text{ (red)} + 5 \text{ (yellow)} = 18 \][/tex]

- Bag 2: The total number of tiles in Bag 2 is the sum of all tiles in Bag 2.
[tex]\[ \text{Total Bag 2} = 1 \text{ (black)} + 4 \text{ (white)} + 3 \text{ (red)} + 1 \text{ (yellow)} = 9 \][/tex]

2. Determine the probability of drawing a red tile from each bag:
- Probability of drawing a red tile from Bag 1:
[tex]\[ \text{Prob (Red Bag 1)} = \frac{\text{Number of red tiles in Bag 1}}{\text{Total number of tiles in Bag 1}} = \frac{3}{18} = \frac{1}{6} \approx 0.1667 \][/tex]

- Probability of drawing a red tile from Bag 2:
[tex]\[ \text{Prob (Red Bag 2)} = \frac{\text{Number of red tiles in Bag 2}}{\text{Total number of tiles in Bag 2}} = \frac{3}{9} = \frac{1}{3} \approx 0.3333 \][/tex]

3. Calculate the combined probability of both events happening:
- Since drawing one red tile from each bag are independent events, we multiply the probabilities:
[tex]\[ \text{Prob (Two Red Tiles)} = \text{Prob (Red Bag 1)} \times \text{Prob (Red Bag 2)} = \frac{1}{6} \times \frac{1}{3} = \frac{1}{18} \approx 0.0556 \][/tex]

Thus, the probability that Gavin will select two red tiles (one from each bag) is:
[tex]\[ \boxed{\frac{1}{18}} \][/tex]