Question

A bag contains 3 red balls, 4 white balls, and 7 black balls. The probability of drawing a red or a black ball is

• A. \( \frac{5}{7} \)
• B. \( \frac{4}{7} \)
• C. \( \frac{3}{7} \)
• D. \( \frac{1}{7} \)

Hint:

Probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Answer 1

The Correct Option is A

The total number of balls is \( 3 + 4 + 7 = 14 \). The number of favorable outcomes (drawing either a red or a black ball) is \( 3 + 7 = 10 \). Thus, the probability is: \[ \frac{10}{14} = \frac{5}{7}. \]