a bag contains 30 marbles. There are 7 blue, 4 green, 7 red, 6 yellow, and 6 black marbles. Without looking Tarek reaches into the bag and and draws one marble what is the propablility he draws a black marble

Answer 1

The probability that Tarek draws a black marble can be calculated by dividing the number of black marbles (6) by the total number of marbles (30).

Probability of drawing a black marble = Number of black marbles / Total number of marbles = 6/30 = 1/5 = 0.2 = 20%