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New on YouTube: This HRT Quant Interview Question Has a One-Line Answer - Watch now

Get quant-ready in 2026

⚡ Build the skills to land top-paying quant jobs. Offer ends in 25d 09h 49m 07s25 days 9 hours 49 minutes 7 seconds.

A race consists of three flips of a fair coin. You always flip exactly three times, even if the winner is already decided after two flips. Whichever side (heads or tails) appears at least twice wins the race.

What is the probability that the side that appears on the first flip wins the race? Give the answer as a decimal.