To be clear, 9 + 10 = 19. It never has and never will equal 21.
This is question is in reference to a YouTube meme that has been making the rounds, at least since 2014. Here's the dialogue:
Older person: You stupid
Little kid: No I'm not!
Older person: What's 9 + 10?
Little kid: 21
Older person: You stupid
No you can not prove that 9 +10 = 21.
No, 10 plus 9 cannot equal 21. The correct sum of 10 and 9 is 19. The statement that 10 plus 9 equals 21 is mathematically incorrect.
9+10 =21 is sated from a popular vine
No, because 9+10 = 19
11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
12 plus 9 equals 21.
"Innumerate", perhaps.
A + 9 = 21 A = 21 - 9 A = 12
21
21
9 plus 10 equals 19. This simple arithmetic operation is often humorously referenced in internet culture due to a viral video where a child mistakenly claims that 9 plus 10 equals 21. However, mathematically, the correct answer remains 19.
The phrase "9 plus 10 equals 21" originated from a viral internet video where a child humorously asserts that 9 plus 10 equals 21, despite the correct answer being 19. This nonsensical answer became a meme, symbolizing humor and the playful nature of internet culture. It highlights how some statements can gain popularity due to their comedic value rather than their mathematical accuracy.