A. In the experiment of rolling two fair 6-sided dice, Leonard considers the outcome a "success" if the sum of the die results is either 5 or 6. Leonard performs this trial 4 times.
b. In tossing two fair coins, Mildred considers the outcome a "success" if both coins land on "Heads." Mildred performs this trial 3 times.
c. In rolling a fair 4-sided die (with edges numbered 1, 2, 3, and 4, respectively), Nigel considers it a "success" if he rolls a "1." Nigel performs this trial 5 times.
1. Among the (collective) trials of Leonard, Mildred, and Nigel, what is the probability that exactly 3 successes occur? (Answer as a decimal number, and round to 3 decimal places).