If i write one digit per second, how long will it take me to write out all the numbers from 1 to 1989? how long : a) 33 min 9 sec b)1 h 22 min 39 sec 3)1 h 54 min d) 1 h 54 min 9 sec e) 2 h 12 min 9 sec i have an exam on sat, average is 1 min 30 sec for each question so i need to know how to do this quickly pleeease.