Question

A bag of marbles contains 3 yellow marbles, 4 blue marbles, and 8 red marbles. Which of the following is true of selecting a marble that is a primary color (red, yellow, or blue)? Select all that apply.
The probability is 7/15
This event is certain to happen.
This event will not happen.
The probability is 1.
The probability is 0.

Answer 1

Certain to happen, because the whole bag is made of primary colors
and the probability is 1, but not sure about the second one

Answer 2

This event is certain to happen