Explanation
Given: For one toss of a certain coin, the probability that the outcome is heads is 0.6.
Asked: If this coin is tossed 5 times, which of the following is the probability that the outcome will be heads at least 4 times?
The probability that the outcome will be heads at least 4 times = The probability that the outcome will be heads 4 times + The probability that the outcome will be heads 5 times = 5C4*(.6)^4*(.4) + 5C5*(.6)^5 = 5(.6)^4(.4) + (.6)^5
IMO E