Question missed on "The Wall" game show tonight - sigh!

It's a tough question here I know. But the lady chose mathematics because she thought it had to do with numbers. Not a totally wrong train of thought, but that train did jump the track to get to the wrong answer. The image just happened to catch the coin background; they had backgrounds for the other choices too.
10-4,
Erik
My registry sets
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When I tell someone I am a Numismatist, most look at me as if I had said I am a serial killer.
Can you imagine their reaction if you told them that you're a Philatelist?
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
I went to old new gate prison about 15 years ago for a tour. I was telling some people on line.a few newbies thought I escaped from federal prison so be careful
It dates back to the revolutionary war
Ignorance is not bliss on a game show. Peace Roy
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Obviously the contestant did not have the 'clue'....
Cheers, RickO
Why do YOU assume they are mutually exclusive?
ANA 50 year/Life Member (now "Emeritus")
They must have known the average Numismatist is as far removed from a Trapeze artist as is possible. Very funny.
And those who know enough but have an agenda might go ad hominem and point out that Walter Breen was a big numismatist.
I thought maybe , 'numismatists' is to coin collectors as 'spelunkers' is to cavers. The fancy term mostly used by pretentious outsiders...