This math topic focuses on calculating the probability of not achieving specific outcomes when flipping two coins, specifically not flipping both heads or both tails. It involves solving problems by expressing probabilities as fraction equations. Each question presents a scenario with multiple answer options formatted as expressions, testing the understanding of elementary probability and the use of fractions to calculate likeliness. This is part of a broader introductory unit on probability and counting with multiple events.
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What is the equation for the chance of NOT flipping both heads on these coins?