Last updated at Jan. 3, 2019 by Teachoo

Transcript

Ex 3.5, 11 18 is divisible by both 2 and 3. It is also divisible by 2 × 3 = 6. Similarly, a number is divisible by both 4 and 6. Can we say that the number must also be divisible by 4 × 6 = 24? If not, give an example to justify your answer.Numbers divisible by 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36,…… Numbers divisible by 6 are 6, 12, 18, 24, 30, 36,…….. Numbers divisible by 4 & 6 are 12, 24, 36,……….. We see that 12, 36, .. are not divisible by 24 So, a number divisible by 4 and 6 is not divisible by 24 Note: This is because 4 & 6 are not co-prime

Ex 3.5

Ex 3.5, 1 (a)
Important

Ex 3.5, 1 (b)

Ex 3.5, 1 (c)

Ex 3.5, 1 (d)

Ex 3.5, 1 (e)

Ex 3.5, 1 (f)

Ex 3.5, 1 (g)

Ex 3.5, 1 (h)

Ex 3.5, 1 (i)

Ex 3.5, 2

Ex 3.5, 3 Important

Ex 3.5, 4

Ex 3.5, 5

Ex 3.5, 6 Important

Ex 3.5, 7

Ex 3.5, 8

Ex 3.5, 9 Important

Ex 3.5, 10 Important

Ex 3.5, 11 You are here

Ex 3.5, 12

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.