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Last updated at Sept. 9, 2021 by Teachoo

Transcript

Ex 3.3, 4 Using divisibility tests, determine which of the following numbers are divisible by 11: (e) 10000001 1 0 0 0 0 0 0 1 Sum of digits at odd Places = 1 + 0 + 0 + 0 = 1 Sum of digits at even Places = 0 + 0 + 0 + 1 = 1 Difference = 1 − 1 = 0 Since the difference is 0 ∴ 10000001 is divisible by 11

Ex 3.3

Ex 3.3, 1

Ex 3.3, 2 (a)

Ex 3.3, 2 (b)

Ex 3.3, 2 (c)

Ex 3.3, 2 (d)

Ex 3.3, 2 (e)

Ex 3.3, 2 (f)

Ex 3.3, 2 (g)

Ex 3.3, 2 (h)

Ex 3.3, 2 (i)

Ex 3.3, 2 (j)

Ex 3.3, 3 (a)

Ex 3.3, 3 (b)

Ex 3.3, 3 (c)

Ex 3.3, 3 (d)

Ex 3.3, 3 (e)

Ex 3.3, 3 (f)

Ex 3.3, 3 (g)

Ex 3.3, 3 (h)

Ex 3.3, 3 (i)

Ex 3.3, 3 (j)

Ex 3.3, 4 (a)

Ex 3.3, 4 (b)

Ex 3.3, 4 (c)

Ex 3.3, 4 (d)

Ex 3.3, 4 (e) You are here

Ex 3.3, 4 (f)

Ex 3.3, 5 Important

Ex 3.3, 6 Important

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.