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Ex 5.3, 4 - Numbers 1 to 10 are written on ten separate slips

Ex 5.3, 4 - Chapter 5 Class 8 Data Handling - Part 2
Ex 5.3, 4 - Chapter 5 Class 8 Data Handling - Part 3 Ex 5.3, 4 - Chapter 5 Class 8 Data Handling - Part 4


Transcript

Ex 5.3, 4 Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of . (i) getting a number 6? Total number of slips = 10 Number of Slips with 6 written on them = 1 Probability = (π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠 π‘€π‘–π‘‘β„Ž 6 π‘€π‘Ÿπ‘–π‘‘π‘‘π‘’π‘› π‘œπ‘› π‘‘β„Žπ‘’π‘š)/(π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠) = 𝟏/𝟏𝟎 Ex 5.3, 4 (ii) getting a number less than 6? Slips with a number less than 6 = 1, 2, 3, 4, 5, 6 Number of slips with a number less than 6 = 5 Probability = (π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠 π‘€π‘–π‘‘β„Ž π‘Ž π‘›π‘’π‘šπ‘π‘’π‘Ÿ 𝑙𝑒𝑠𝑠 π‘‘β„Žπ‘Žπ‘› 6)/(π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠) = 5/10 = 𝟏/𝟐 Ex 5.3, 4 (iii) getting a number greater than 6? Slip with a number greater than 6 = 7, 8, 9, 10 Number of slips greater than 6 written on them = 4 Probability = (π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠 π‘”π‘Ÿπ‘’π‘Žπ‘‘π‘’π‘Ÿ π‘‘β„Žπ‘Žπ‘› 6 )/(π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠) = 4/10 = 𝟐/πŸ“ Ex 5.3, 4 (iv) getting a 1-digit number? One digit number = 1, 2, 3, 4, 5, 6, 7, 8, 9 ∴ Number of slips with one-digit number= 9 Probability = (π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠 π‘€π‘–π‘‘β„Ž π‘œπ‘›π‘’ 𝑑𝑖𝑔𝑖𝑑 π‘›π‘’π‘šπ‘π‘’π‘Ÿ)/(π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ 𝑠𝑙𝑖𝑝𝑠) = 9/10

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.