Bob and Joe were sitting in their math class one day... (x-post r/unexpectedfactorial)

Bob and Joe were sitting in their math class one day when their teacher suddenly shouts “Pop quiz! If you don’t answer this question correctly, then you will fail the class”

Both Bob and Joe are taken aback.

The teacher turns to Joe, “Joe! Quickly, how many seconds are there in six weeks?” Joe takes a few seconds to think about it, and then with a smile on his face quickly exclaims, “there are exactly 10!”

The teacher then turns to Bob, “What do you think, Bob?” Bob is perplexed with Joe’s answer. How can there only be 10 seconds in six weeks? However, not being great at math, Bob decides to agree with Joe and says, “there are exactly 10 seconds in six weeks.”

The teacher then turns back to Joe with a smile, “Great work, Joe. You pass!” She then turns to Bob shaking her head. “Bob, looks like I will be seeing you again next year. You fail.”