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Anestetic [448]
3 years ago
13

The odds of choosing one black ball from an urn are 7 to 13. what is the probability of getting a black ball?

Mathematics
2 answers:
TEA [102]3 years ago
7 0

Answer: \dfrac{7}{20}

Step-by-step explanation:

The odds for an event is basically the ratio of the favorable outcomes to the unfavorable outcomes.

Given : The odds of choosing one black ball from an urn are 7 to 13.

i.e. favorable outcomes for getting black ball = 7

i.e.  unfavorable outcomes for getting black ball = 13

Now , Total outcomes = favorable outcomes+  unfavorable outcomes

=7+13=20

Then, the probability of getting a black ball =\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}

=\dfrac{7}{20}

Hence, the required probability =\dfrac{7}{20}

ycow [4]3 years ago
4 0
I think the answer is 7/13.
Hope this helps.
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3 years ago
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