Q1 Which of the following is divisible by 17 for all positive integer n $$7^{n}+2$$ $$6^{n}+2$$ $$2.7^{n}+3.5^{n}-5$$ $$3.5^{2n+1}+2^{3n+1}$$ Q2 A matrix $$ X=\bigl(\begin{pmatrix} 3 & 1\\ 5 & 2\end{pmatrix}\bigr)$$ define a function from $$\mathbb{R}^{2}\; to\;\mathbb{R}^{2} $$ by $$f_{X}(a,b)=(3a+b,\; 5a+2b)$$ . …
