Question

The odds of choosing one black ball from an urn are 8 to 13. what is the probability of getting a black ball?

Answer 1

P(black) = 8/13

The probability of choosing a black ball is 8/13

Answer 2

The probability of getting a black ball is 8/21

We know that the total sum of probability of an event outcome is usually equal to 1

The probability of the favourable odds to unfavourable odds is given as:

• 8 : 13

∴

The number of total odds = 8 + 13

= 21

Probability = no of favourable odds/ total number of odds in the sample

Probability of getting a black ball = 8/21

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