# Need math help with a Well explanation to Solve This Probability Problem

**Question description**

Tickets numbered
1 to 20 are mixed up and then a ticket is drawn at random. What is the
probability that the ticket drawn has a number which is a multiple of 3
or 5?

In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked
up randomly. What is the probability that it is neither red nor green?

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