Asking and answering mathematical questions can increase information, as long as you use all the original information and answer correctly, it is completely possible.

For example, Xiao Ming has three black pencils and five blue pencils.

Direct question: How many pencils does Little Yi Ming have?

Supplementary information question: He gave Xiaolan two pencils. How many pencils does Xiaoming have left?

The formula is: 3+5-2.