Three unbiased coins means each coin has an equal chance of showing Heads (H) or Tails (T). We want to find the probability of getting exactly 2 heads when tossing 3 coins simultaneously.
When tossing 3 coins, all possible outcomes are:
HHH
HHT
HTH
HTT
THH
THT
TTH
TTT
Total possible outcomes = 8
Each coin has 2 options, so 2×2×2=8
Outcomes with exactly 2 heads:
HHT (2 heads, 1 tail)
HTH (2 heads, 1 tail)
THH (2 heads, 1 tail)
Favorable outcomes = 3
Probability =Total number of outcomesNumber of favorable outcomes
Probability =83
Therefore, the probability of exactly two heads is 83.