Question Number 90914 by liki last updated on 26/Apr/20
Commented by liki last updated on 26/Apr/20
$$\mathrm{qn}\:\mathrm{1a} \\ $$
Commented by mr W last updated on 26/Apr/20
$${if}\:{you}\:{can}'{t}\:{post}\:{clear}\:{image},\:{you}\:{should} \\ $$$${type}\:{your}\:{question},\:{such}\:{that}\:{other}\:{people} \\ $$$${can}\:{clearly}\:{read}\:{your}\:{question}.\:{thanks}! \\ $$