Question

Tina has 4 black marbles, 6 red marbles, 3 blue marbles, 7 green marbles, and 5 yellow marbles. She places all of the marbles in a bag and randomly selects one. Find the theoretical probability that Tina will randomly select a yellow marble. Express this in the form of a fraction in the simplest form.

Answer 1

It's a 5 in a 25th chance she'll choose yellow

Answer 2

7/25 you add all and put 7