Answer: 2/5
Step-by-step explanation:
Number of red bricks = 50
Number of yellow bricks = 50
Number of green bricks = 50
Number of blue bricks = 50
Number of orange bricks = 50
Total number of bricks = 250
The probability of choosing a red piece is 50/250 = 1/5. Also, the probability of choosing a yellow piece is also 1/5.
Therefore, the probability that he chooses a red or a yellow piece will be:
= P(red) + P(yellow)
= 1/5 + 1/5
= 2/5
