Question

​1.write all the factors of the follo​wing natural numbers:-
​ (i)68 (ii)27
2) ​write first six multiples of the following natural numbers:-
(i)3 (ii) 5
3)Find the common factors of:-
​(i)20&28 (ii)35&50

Answer 1

$$\begin{gathered} \left(1\right). \\ \left(\mathrm{i}\right). \\ \mathrm{Factors}\mathrm{of}68: \\ 1,2,4,17,34\mathrm{and}68 \\ \left(\mathrm{ii}\right). \\ \mathrm{Factors}\mathrm{of}27: \\ 1,3,9\mathrm{and}27. \\ \left(2\right). \\ \left(\mathrm{i}\right).\mathrm{First}6\mathrm{multiples}\mathrm{of}3:3,6,9,12,15,18 \\ \left(\mathrm{ii}\right).\mathrm{First}6\mathrm{multiples}\mathrm{of}5:5,10,15,20,25,30 \\ \left(3\right). \\ \left(\mathrm{i}\right). \\ \mathrm{Factors}\mathrm{of}20:1,2,4,5,10\mathrm{and}20 \\ \mathrm{Factors}\mathrm{of}28:1,2,4,7,14\mathrm{and}28 \\ \mathrm{Common}\mathrm{factors}=1,2\mathrm{and}4 \\ \left(\mathrm{ii}\right). \\ \mathrm{Factors}\mathrm{of}35:1,5,7\mathrm{and}35 \\ \mathrm{Factors}\mathrm{of}50:1,2,5,10,25\mathrm{and}50 \\ \mathrm{Common}\mathrm{factors}=1\mathrm{and}5. \end{gathered}$$