Ex 3.1,3 If a matrix has 18 elements, what are the possible orders it can have? What, if it has 5 elements? The matrix has 18 element which can be put in the following orders 1 × 18 = 18 2 × 9 = 18 3 × 6 = 18 6 × 3 = 18 9 × 2 = 18 18 × 1 = 18 Number of rows × Number of columns = 18 Hence possible order are 1 × 18, 2 × 9, 3 × 6, 6 × 3, 9 × 2, and 18 × 1 If a matrix has 5 elements 1 × 5 = 5 5 × 1 = 5 No of rows × no of columns = 5 Hence possible orders are 1 × 5 & 5 × 1

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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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