TRICKY MATHS Write the greatest and the smallest 4-digit numbers: a. Using only one digit. b. c. d. Using digits 2 and 4 repeatedly. Using all different digits. Using 3,0 and 1 and any other digit of your choice. TRICKY MATHS Write the greatest and the smallest 4 - digit numbers : a . Using only one digit . b . c . d . Using digits 2 and 4 repeatedly . Using all different digits . Using 3,0 and 1 and any other digit of your choice .

please anyone help cause my sister have a test tomorrow but i don't know how to solve ​