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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


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Ex 3.5, 7 The sum of two consecutive odd numbers is divisible by 4. Verify this statement with the help of some examples.Let us find the sum of two consecutive odd numbers 1 + 3 3 + 5 5 + 7 7 + 9 13 + 15 = 28 31 + 33 = 64 101 + 103 = 204 123 + 125 = 248 Let’s check if these numbers are divisible by 4 If a number is divisible by 4, its last two digits are divisible by 4 Here, last two digits are 4, 8, 12, 16, 28, 64, 04, 48 They are divisible by 4 So, the number is also divisible by 4 ∴ Sum of two consecutive odd numbers is always divisible by 4

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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.