1. Find the probability that at least one head appears when two fair coins are flipped and the up face on each is observed.
2. Find the probability that the number of dots on the up faces sum to 7 when a pair of fair dice is tossed and the up face on each is observed.
3. Find the probability of drawing a face card when a single card is drawn at random from a well-shuffled standard deck of 52 playing cards.