Question

a bag of same size small balls contain 6 blue balls 5 red balls 5 yellow balls and 4 green balls what is the probality of selecting a blue or green ball on first draw

Answer 1

Below

Step-by-step explanation:

Blue ( 6) OR green ( 4) is 10 out of ( 6 + 5 + 5 + 4)

10 / 20 = 1/2 chance of blue OR green