The table below shows the number of marbles of different colors in a box. A fair coin is shown below the table.
Color of Marble Number
Red 10
Blue 1
Green 5
Pink 4
A coin
Dan selects a marble from the box randomly without looking and then tosses the fair coin. What is the probability that Dan will select a blue marble and the coin will land tails up? (1 point)
1 over 40
3 over 40
11 over 20
19 over 20
The probability of selecting a blue marble is 1/20 (1 blue marble out of a total of 20 marbles).
The probability of the coin landing tails up is 1/2.
To find the probability of both events happening, you multiply the probabilities:
1/20 * 1/2 = 1/40
Therefore, the probability that Dan will select a blue marble and the coin will land tails up is 1/40.
Therefore, the answer is 1 over 40.