This math skill teaches calculating the probability of not getting the same outcome on multiple coin flips, using the complement rule. It involves subtracting the probability of all coins showing the same face from one.
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Probability of flipping multiple coins not all heads or tails
Test your understanding of probability of flipping multiple coins not all heads or tails by practicing it! Work through the below exercises to use it in practice.
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What is the chance of not flipping all heads on these two coins?
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We can reverse the problem and say that the chance of not flipping all heads is 100%, or 1 if we're working with fractions, minus the chance of flipping all heads
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The chance of flipping all heads is 1 out of 4 because each coin has 2 outcomes and 2 times 2 is 4
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So our chance of not flipping all heads is 1, minus one quarter, or three quarters. We can express three quarters as 0.75 or 75%