Multiple choice

The odd against a certain event is 5/2 and the odds in favour of another independent event is 6/5. The probability that none of the events will occur is

  1. 6/11

  2. 5/11

  3. 52/77

  4. 25/77

  5. -

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

Odd against event E1 = 5/2 Probability of event E1 = 2/7 Odds in favour of event E2 = 6/5 Probability of event E2 = 6/11 Probability that none of the events will occur = (1 - 2/7 ) (1 - 6/11) = 5/7 x 5/11 = 25/77 Option 4 is correct.