Question

12 defective pens are accidentally mixed with 132 good ones. It is not possible to tell by looking at a pen whether it is defective or not. One pen is taken out at random from this lot. What is the probability that the pen taken out is a good one?

• A. \( \frac{15}{18} \)
• B. \( \frac{13}{15} \)
• C. \( \frac{10}{12} \)
• D. \( \frac{11}{12} \)

Hint:

In probability questions: \[ P(E)=\frac{\text{Favorable Outcomes}}{\text{Total Outcomes}} \] Always remember to calculate the total number of objects first before applying the formula.

Answer 1

The Correct Option is D