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QJEEM19Ma47c4: JEE Main 2019 Mathematics - Class 12 JEEM19Ma47c4 Solution: An unbiased coin is tossed. If the outcome is a head then a…

An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of the numbers obtained on them is noted. If the toss of the coin results in tail then a card from a well-shuffled pack of nine cards numbered 1, 2, 3, ……, 9 is randomly picked and the number on the card is noted. The probability that the noted number is either 7 or 8 is :

Multiple Choice Options

  • A 1936
  • B 1572
  • C 1336
  • D 1972

Step-by-Step Verified Solution

JEE Main 2019 (Online) 10th January Morning Slot Mathematics - Probability Question 165 English Explanation
P(A)=12×1136+12×29=1972

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