Question 11
Two dice are thrown at the same time and the product of numbers appearing on them is noted. Find the probability that the product is a prime number
CBSE Class 10 Sample Paper for 2019 Boards
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CBSE Class 10 Sample Paper for 2019 Boards
Last updated at Sept. 24, 2021 by Teachoo
Question 11
Two dice are thrown at the same time and the product of numbers appearing on them is noted. Find the probability that the product is a prime number
Question 11 Two dice are thrown at the same time and the product of numbers appearing on them is noted. Find the probability that the product is a prime number To dice are thrown, and we note the product of numbers We know that Prime numbers are numbers with exactly 2 factors Example: 2, 3, 5, 7, 11, 13 In our case, Total outcomes where product is a prime number = 6 Total number of outcomes = 36 1/2 marks Now, P(Product is prime) = (ππ’π‘πππππ π€βπππ ππ’ππππ ππ πππππ)/(πππ‘ππ ππ’ππππ ππ ππ’π‘πππππ ) = 6/36 = 1/6 1/2 marks