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2018 BIMC keystage3-IWYMIC individual Question 3

xIMC · 2018 BIMC keystage3-IWYMIC individual

Question 3

Ann tosses a fair coin twice while Bob tosses the same coin three times. The probability that they obtain the same number of heads at the end of the game is expressed as an irreducible fraction. What is the sum of its numerator and its denominator?

Answer: ______