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2004 AMC 10A Question 10

AMC10 · 2004 AMC 10A

Question 10

Coin $A$ is flipped three times and coin $B$ is flipped four times. What is the probability that the number of heads obtained from flipping the two fair coins is the same?
  1. $\dfrac{19}{128}$
  2. $\dfrac{23}{128}$
  3. $\dfrac{1}{4}$
  4. $\dfrac{35}{128}$
  5. $\dfrac{1}{2}$