Question

is 7x5x3x11+11 a composite number? justify your answer

Answer 1

$7 \times 5 \times 3 \times 11 + 11 \\ 11(7 \times 5 \times 3 \times 1 + 1) \\ 11(106) \\ \\ this \: number \: has \: more \: than \: \\ two \: factors \: so \: it \: is \: composite \: \\ number$