FLASH ANZAN (arithmetic)
-Number of Digits to choose from 1-7
-Flash time (speed) can be changed from 3.0 to 0.1 seconds
-Number of problem to choose from 5-100
-Number of Digits to choose from 1-7
-Flash time (speed) can be changed from 3.0 to 0.1 seconds
-Number of problem to choose from 5-100