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A coin is tossed and a marble is drawn from a jar containing 12 marbles numbered 1 to 12. Find the probability of getting either heads or tails on the coin and picking a marble which shows a prime number.
  • a)
    5/12
  • b)
    1/3
  • c)
    1/4
  • d)
    7/12
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A coin is tossed and a marble is drawn from a jar containing 12 marble...
P(A) = P (either head or a tail) = P(Head on the coin) + P(Tail on the coin) = (1/2) + (1/2) = 1
The prime numbers from 1 to 12 are 2, 5, 7, 3, 11.
P(B) = P(prime numbered marbles) = 5/12
P(A and B) = P(A) x P(B) = 1 x 5/12 = 5/12
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A coin is tossed and a marble is drawn from a jar containing 12 marbles numbered 1 to 12. Find the probability of getting either heads or tails on the coin and picking a marble which shows a prime number.a)5/12b)1/3c)1/4d)7/12Correct answer is option 'A'. Can you explain this answer?
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