$\backslash$table$[[$Question $2(5$ points$)],[-=,4)$ Listen,grad,,,$],[,415,,728,1003,814],[,15,,10,20,24],[,430,,807,1023,?]]$

Identify the last number in the sheet. Again, it is a think$-$out$-$of$-$the$-$box question instead of a purely mathematical question.

Hint: the numbers in the both questions are closely related to your daily lives. If you can identify the information behind the numbers, you can solve the problems.

A