Question

You are pulling a block from a bag containing 4 red, 3 blue, 2 green, or 1 orange blocks. What is the probability you draw a green or blue?

Answer 1

2/10 - green + 3/10 - blue = 5/10

Explanation:

add green and blue which is 5/10, so you have a 1/2 chance

Answer 2

5/10=1/2

Explanation:

because if you add up all the blocks you get 10, and only 5 of them are either blue or green so its 1/2