Question

1. a bag contains 4 red, 3 blue, and 5 green tiles. if one tile is chosen at random, what is the probability that it is not blue?

3/12

7/12

3/4

2/4

Explanation:

Step1: Calculate total number of tiles

Total tiles = Red + Blue + Green = \( 4 + 3 + 5 = 12 \)

Step2: Calculate number of non - blue tiles

Non - blue tiles = Red + Green = \( 4 + 5 = 9 \)

Step3: Calculate probability of non - blue tile

Probability = \( \frac{\text{Number of non - blue tiles}}{\text{Total number of tiles}}=\frac{9}{12}=\frac{3}{4} \)

Answer:

3/4 (corresponding to the option with 3/4)