How can someone ask a wondering question to make a listener deduce the answer?
Here are a couple of examples to demonstrate what I mean:
A: Is he sad because he lost 1 Bitcoin?
B: He was extremely sad because he lost a couple of dollars yesterday so how would a Bitcoin be?! (or what about a Bitcoin?!)
A: Did son gave his mother an expensive present?
B: Last week, he gave a friend a very valuable present so how about his beloved mother?!
I'd like to ask those questions Colloquially (not formal) and a U.S. answer is preferable. Forgive me if I wrote a completely wrong question words. I don't know the right ones.