There are 12 months in a year.
Divide 9 by 12 then multiply by 100 to get the percentage.
9/12 = 0.75 x 100 = 75%
Answer: 75%
Answer:

Step-by-step explanation:
For
, there are two possible cases:

Solving for both cases, we get:

This is a combination problem.
6 nCr 2

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Answer:

Step-by-step explanation:
hope this will help you