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If the overall percentage of success in an exam is 60, what is the probability that out of a group of 4 students, at least one has passed?
  • a)
    0.6525.
  • b)
    0.9744.
  • c)
    0.8704.
  • d)
    0.0256.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If the overall percentage of success in an exam is 60, what is the pro...
To find the probability that at least one student has passed the exam out of a group of 4 students, we can use the concept of complementary probability. The complementary probability is the probability that the event of interest does not occur.

Let's calculate the probability that all four students fail the exam first and then subtract it from 1 to find the probability that at least one student passes.

Probability that a student fails the exam = 1 - 60/100 = 40/100 = 0.4

Probability that all four students fail = (0.4)^4 = 0.4 * 0.4 * 0.4 * 0.4 = 0.0256

Now, subtracting this probability from 1 will give us the probability that at least one student has passed:

Probability that at least one student has passed = 1 - 0.0256 = 0.9744

Therefore, the correct answer is option B) 0.9744.
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If the overall percentage of success in an exam is 60, what is the probability that out of a group of 4 students, at least one has passed?a)0.6525.b)0.9744.c)0.8704.d)0.0256.Correct answer is option 'B'. Can you explain this answer?
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If the overall percentage of success in an exam is 60, what is the probability that out of a group of 4 students, at least one has passed?a)0.6525.b)0.9744.c)0.8704.d)0.0256.Correct answer is option 'B'. Can you explain this answer? for CA Foundation 2024 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about If the overall percentage of success in an exam is 60, what is the probability that out of a group of 4 students, at least one has passed?a)0.6525.b)0.9744.c)0.8704.d)0.0256.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for CA Foundation 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the overall percentage of success in an exam is 60, what is the probability that out of a group of 4 students, at least one has passed?a)0.6525.b)0.9744.c)0.8704.d)0.0256.Correct answer is option 'B'. Can you explain this answer?.
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