Question 13 — slide 34

Question 13 — slide 35

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Teachoo · Class 10 Explore Class 10

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Question 13 Two dice are rolled simultaneously. The probability of getting number less than 4 on each die is: (A) (1)/(4) (B) (1)/(9) (C) (1)/(36) (D) (1)/(6) Finding Sample Space when two dice are thrown 1 2 3 4 5 6 1 2 3 4 5 6 (1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6) (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6) (3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6) (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6) (5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6) (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6) First dice Second dice Total outcomes = 36 Number of outcomes with number less than 4 on each die = 3 + 3 + 3 = 9 Thus, P(getting number less than 4 on each dice) = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠 𝑤𝑖𝑡ℎ 𝑛𝑢𝑚𝑏𝑒𝑟 𝑙𝑒𝑠𝑠 𝑡ℎ𝑎𝑛 4 𝑜𝑛 𝑒𝑎𝑐ℎ 𝑑𝑖𝑐𝑒)/(𝑇𝑜𝑡𝑎𝑙 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠) = (9)/(36) = (𝟏)/(𝟒) So, the correct answer is (A)

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant qualified since 2010 and an educator teaching since 2006. At Teachoo, he draws on his accounting and tax experience to explain Accounts, Income Tax and GST through step-by-step lessons and practical examples.

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