Flash anzan - by Nicolae Popa (nicolae.m.popa@gmail.com)

Enter here an array of wrong answers, if you have one (for example: 2,5, 3,2, 1,7):
Predefined exercises:
No of digits: Substractions?
Delay (in seconds): Negative results?
How many numbers? Bottom rows only?

Correct questions: 0/0 (0.00%)