waec model questions vol6 2024 mathematics
Objective • Question 15
Question 15
WAEC_MODEL_QUESTIONS_VOL6
•
2024
A factory produces light bulbs, each of which is defective with probability 0.02. Bulbs are packed in boxes of 20. A box is acceptable if it contains at most 2 defective bulbs. If a shipment contains 500 boxes, what is the expected number of acceptable boxes? Give your answer rounded to the nearest whole number.
Answer Options
A.
495
B.
498
Correct Answer
C.
496
D.
500
Correct Answer
C
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