Question 15 A number is chosen at random from the numbers −5, −4, −3, −2, −1, 0, 1, 2, 3, 4, 5. Then the probability that square of this number is less than or equal to 1 is _____________ Numbers are −5, −4, −3, −2, −1, 0, 1, 2, 3, 4, 5 Total Numbers = 11 Now, Square of these numbers are (−5)2, (−4)2, (−3)2, (−2)2, (−1)2, 02, 12, 22, 32, 42, 52 i.e. 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25 Total numbers whose square is less than or equal to 1 = 3 ∴ Required Probability = 𝟑/𝟏𝟏

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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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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