Do you find some mathematical activities useless?

[pier4r]

(04-01-2018 03:26 PM)Maximilian Hohmann Wrote:  

(04-01-2018 03:08 PM)KF6GPE Wrote:  Does balancing my checkbook count?

Unfortunately balancing my checkbook would never have required the kind of mathematics which yields the 1 trillionths digit of pi :-)

Wait a moment. Still today I get the paper from the bank about my withdraws (Kontoauszug) and I do statistics on them to see my spendings behavior.

And the point that the mathematics needed is way simpler is a point for quests using advanced math, or not?