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2 tails. So, some favorable outcomes include H-T-H-T-H, H-T-T-H-H, H-H-T-T-H, etc. But H-T-H-H-H and H-T-H-T-T will not be favorable as we have one and three tails respectively. Therefore, to get the favorable cases, we need to select two of the five flips that will give show tails. The rest will