{Click on the green flag and then watch the proof that 9 + 10 = 21 by starting with 9 + 10 = x This is meant to be a joke and not all of the steps are 100% correct. One of them is sqrt(a² + b²) = a + b, which is false} {Part 2: 2 + 2 = 5 Proof: https://scratch.mit.edu/projects/330707068/ } {Added: 15 Sep 2019 Released: 15 Sep 2019 }
