Question

A marble is selected at random from a jar containing 30 red​ marbles, 10 yellow​ marbles, and 60 green marbles. Find the theoretical probability that it is either red or green.

Answer 1

there is a 90% chance its a red or green or a 90/100 chance

Explanation:

first you need to count your whole which would be the sum of adding all the marbles which is 100 then add the red and green that's 90 lastly you make a fraction 90/100 (simple the fraction if asked )