Which topic is no enough to serve as a subject of a problem and solution essay?

Okay can someone tell me the answer to this problem bc i have to buy it now and i don’t wanna do that

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.

The essay sea stars by barbara hurd. what point is the author making by comparing a sea star missing an arm to a human losing a limb?