Of all the bulbs in a box, 80% are working, while 20% are not

Of all the bulbs in a box, 80% are working, while 20% are not. The probability of obtaining exactly 3 working bulbs out of 5 randomly selected bulbs is: a. \(\frac4^35^5 \) b. 10 * \(\frac4^35^5 \) c. 20 * \(\frac4^35^5 \) d. \(\frac4^35^5 \) e. 10 * \(\frac4^55^5 (…)