Answer:
Mailman
Explanation:
Mailman comes everyday to delivery mails. He drives a USPS van and wears a USPS uniform. He is a good worker as he works whether it is raining or cold outside.
The idea for a plot is that he always rings the bell twice. Not once, not thrice but always twice. I notice that one day and get curious. I find out that there is a reason he is doing it.
It sounds like an interesting investigative play.
Answer:
the science of math can almost help us in every task we do in our life, so that, a good knowledge of math helps us do tasks with more efficient and faster too.
this words should help as it's a general one relates every thing with mathematics as it's a very important science.