Multiple choice

The odds in favour of winning a game of chess, against b, are 5/2. If three games are to be played, the odds in favour of a's winning, at least in one game, are

  1. 335/8

  2. 1/2

  3. 8/335

  4. None of these

  5. -

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Odds in favour of ‘a’ winning = 5/2 Probability of ‘a’ to win match = 5/7 Probability that ‘a’ wins at least one match out of three = 1 – (2/7 x2/7 x 2/7) = 335/343 Odds in favour of winning at least one match = 335/8 Option 1 is correct.