Test: Factorisation I - Ambitious

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Question 1:   Factorise: $7a+7b$
$7\left(7a+b\right)$
$7\left(a+7b\right)$
$7\left(7a+7b\right)$
$7\left(a+b\right)$
Question 2:   Factorise: $2.31p-2.31q$
$2.31\left(p-q\right)$
$2.31\left(q-p\right)$
$2.3\left(p-q\right)$
$2.31\left(p+q\right)$
Question 3:   Factorise: $\left(4q+24p\right)$
$6\left(p+4q\right)$
$4\left(q+6p\right)$
$4\left(p+6q\right)$
$6\left(q+4p\right)$
Question 4:   Factorise: $\left(3{p}^{2}-9p\right)$
$3p\left(3-p\right)$
$3p\left(p-3\right)$
$3\left(p-3\right)$
$p\left(3p-3\right)$
Question 5:   Factorise: $\left(13{y}^{2}-26y\right)$
$13\left(y-2\right)$
$y\left(y-13\right)$
$13y\left(2-y\right)$
$13y\left(y-2\right)$
Question 6:   Factorise: $p\left(a-b\right)-q\left(a-b\right)$
$\left(p-q\right)\left(a-b\right)$
$p-q{\left(a-b\right)}^{2}$
$\left(p-a\right)\left(q-b\right)$
$\left(pa-qb\right)$
Question 7:   Factorise: $p\left(x-y\right)+q\left(x-y\right)$
$\left(p-x\right)\left(q-y\right)$
$\left(p-q\right)\left(x-y\right)$
$\left(p-q\right)\left(x+y\right)$
$\left(p+q\right)\left(x-y\right)$
Question 8:   Multiply: $\left(p+1\right)\left(p+2\right)$
${p}^{2}+3p+2$
${p}^{2}+3p+3$
$2p+3$
${p}^{2}+2p+1$
Question 9:   Factorise: $3p+6q-9r$
$\left(r+2p+3q\right)$
$3\left(q+2p+3r\right)$
$3\left(p+2r+3q\right)$
$3\left(p+2q-3r\right)$
Question 10:   Factorise: $5p-10pq$
$5q\left(1-2p\right)$
$5p\left(1-2q\right)$
$10q\left(1-2p\right)$
$10p\left(1-2q\right)$