Question

a bag has 4 green marbles, 3 red, 2 blue and 1 yellow. what is the theoretical probability of pulling a red?

Explanation:

Step1: Calculate total number of marbles

Total marbles = \(4 + 3+2 + 1=10\)

Step2: Use probability formula

Probability \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). Number of red marbles \(n = 3\), total marbles \(N=10\). So \(P=\frac{3}{10}\)

Answer:

\(\frac{3}{10}\)