[ SmokeDetector | MS ] Mostly non-latin title (87): Prove that 𝑓^−1 (𝐴 ∩ 𝐵) ⊆ 𝑓^ −1 (𝐴) ∩ 𝑓^ −1 (𝐵) by rdr2 on math.SE

not a math question

One more deletion vote needed:

d1, d2, d3, d4, d5

For deletion: d6, d7, d8, d9

[ SmokeDetector | MS ] Mostly non-latin title (87): Find $438^87493 ≡ ? (𝑚𝑜𝑑 11)$ by rdr2 on math.SE

@RRL DI to DX gone except for DU.

D1, D2, D3.

D4, D5, D6.

D7, D8, D9.

D10, D11, D12.

D13, D14, D15.

C1, C2, C3

C4, C5, C6.

D16.

psq math.stackexchange.com/q/3156842/29335

At best unclear, at worst wrong-headed math.stackexchange.com/q/3156736/29335

psq/andor/duplicate math.stackexchange.com/questions/3156867/…

@rschwieb Now self-deleted. But this was at least the fifth time the question was asked here, so there is still some closure to do. The oldest version I've found was this; the three linked questions are duplicates that I've voted to close.

(Curiously, one of these question was also asked today.)

You know what they say about homework: when it rains, it pours

@rschwieb I'd go with "unclear"; doesn't sound like a problem user to me.

This has got to be a duplicate math.stackexchange.com/a/3156980/29335

[ SmokeDetector | MS ] Offensive answer detected, toxic answer detected (159): What are the odds of losing a bet 10 times in a row when I have a 25% chance of winning? by bLoWsMokE on math.SE

[ SmokeDetector | MS ] Blacklisted user (69): What are the odds of losing a bet 10 times in a row when I have a 25% chance of winning? by bLoWsMokE on math.SE

[ SmokeDetector | MS ] Mostly non-latin body, mostly non-latin title (167): จงพิสูจน์ว่าถ้ามีลำดับย่อย{ank}ลู่เข้าสู่A และมีลำดับย่อย{anj}ลู่เข้าสู่B และAไม่เท่ากับB แล้ว{an}เป็นลำดับลู่ออก by K K on math.SE

Hey CRUDE chatters, I have a question for you all. Aside from obvious cases when a question ought to be deleted (spam, rude/abusive, etc.), what is the thought behind deleting questions as opposed to closing them?

I answered this question a few days ago, as I thought it was reasonable, but I am surprised today to see that it in the close queue with 4 close votes and 2 downvotes.

It seems to me to be a reasonable question of a motivated student who has a misunderstanding that should be corrected. I can understand the two close votes "not clear what you are asking', because the OP never specifically asked to point out the flaw in their reasoning, which I've corrected by adding a specific question, but I cannot understand the close votes "not about mathematics". What would the reasoning behind such votes be?