12. A purse contains 4 copper coins & 3 silver coins, the second purse contains 6 copper coins & 2 silver coins. If a coin is drawn out of any purse, then the probability that it is a copper coin, is :
(a) 4/7 (b) 3/4 (c) 37/56 (d) none of these
Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Probability » Exercise - 15. 6 coins are tossed simultaneously . The probability of getting atleast 6 heads is : (a) 57/64 (b) 229/256 (c) 7/64 (d) 37/256
Probability » Exercise - 17. A coin is tossed and a dice is rolled . The probability that the coin shows the head and the dice shows 6 is : (a) 1/8 (b) 1/12 (c) 1/2 (d) 1
Probability » Exercise - 19. If P (A) = 0.4, P (B) = x, P (A ∪ B) = 0.7 and the events A & B are independent, then x = (a) 1/3 (b) 1/2 (c) 2/3 (d) none of these
Probability » Exercise - 111. If A & B are any two events, then the true relation is : (a) P (A ∩B) > P (A) + P (B) - 1 (b) P (A ∩B) < P (A) + P (B) (c) P (A ∩ B) = P (A) + P (B) − P (A ∪ B) (d) none of these
Probability » Exercise - 113. If A & B are any two events, then the probability that exactly one of them occur is : (a) P (A) + P (B) - P (A ∩B) (b) P (A) + P (B) - 2 P (A ∩B) (c) P (A) + P (B) - P (A ∪B) (d) P (A) + P (B) - 2 P (A ∪B)