A coin is tossed. If head turns up then pair of dice is thrown and sum of numbers is noted. If tail turns up then a card numbered from $ 1 $ to $ 9 $ is drawn and number is noted. The probability that the sum of numbers on dice or the number on card is $ 7 $ or $ 8 $, is:

Question

A coin is tossed. If head turns up then pair of dice is thrown and sum of numbers is noted. If tail turns up then a card numbered from $ 1 $ to $ 9 $ is drawn and number is noted. The probability that the sum of numbers on dice or the number on card is $ 7 $ or $ 8 $, is:, $ \frac{13}{36} $, $ \frac{15}{72} $, $ \frac{19}{72} $, $ \frac{11}{36} $

MARKS App · Accepted Answer

P 7 or 8 = P H P 7 o r 8 + P T P 7 or 8 = 1 2 × 11 36 + 1 2 × 2 9 = 11 72 + 1 9 = 19 72

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