Test Index

Probability

Question : 56 of 127

Marks: +1, -0

12 .

Solution:

Concept:

Use the addition rule of probability for mutually exclusive events.

Explanation:

Total balls = 12.

Multiples of 5 from 1 to 12:

5, 10

(2 numbers).

Multiples of 6 from 1 to 12:

6, 12

(2 numbers).

No number is a multiple of both 5 and 6 in this range, so events are mutually exclusive.

Favorable outcomes =

2 + 2 = 4

Probability =

\frac{4}{12} = \frac{1}{3}

Answer:

\frac{1}{3}

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