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A bag contains 8 red balls and 12 blue balls. One ball Is drawn at random and replaced with 5 green balls. A second ball was drawn without replacement. What Is the probability that first ball drawn is red In colour and the second ball drawn Is blue in colour?
  • a)
    2/5
  • b)
    1/5
  • c)
    1/15
  • d)
    3/5
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A bag contains 8 red balls and 12 blue balls. One ball Is drawn at ran...
Calculation:
⇒ The total number of red and blue ball = 8 + 12 = 20
⇒ The total number of after 5 balls replacement = 20 - 1 + 5 = 24
⇒ Probability to first ball is res colour = 8/20
⇒ Probabaility of second ball is blue colour = 12/24
⇒ The required probability = (8/20) × (12/24) = 1/5
∴ The required result will be 1/5.
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A bag contains 8 red balls and 12 blue balls. One ball Is drawn at random and replaced with 5 green balls. A second ball was drawn without replacement. What Is the probability that first ball drawn is red In colour and the second ball drawn Is blue in colour?a)2/5b)1/5c)1/15d)3/5Correct answer is option 'B'. Can you explain this answer?
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A bag contains 8 red balls and 12 blue balls. One ball Is drawn at random and replaced with 5 green balls. A second ball was drawn without replacement. What Is the probability that first ball drawn is red In colour and the second ball drawn Is blue in colour?a)2/5b)1/5c)1/15d)3/5Correct answer is option 'B'. Can you explain this answer? for UGC NET 2025 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about A bag contains 8 red balls and 12 blue balls. One ball Is drawn at random and replaced with 5 green balls. A second ball was drawn without replacement. What Is the probability that first ball drawn is red In colour and the second ball drawn Is blue in colour?a)2/5b)1/5c)1/15d)3/5Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UGC NET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bag contains 8 red balls and 12 blue balls. One ball Is drawn at random and replaced with 5 green balls. A second ball was drawn without replacement. What Is the probability that first ball drawn is red In colour and the second ball drawn Is blue in colour?a)2/5b)1/5c)1/15d)3/5Correct answer is option 'B'. Can you explain this answer?.
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