Jimmy wants to climb up a flight of stairs with $$10$$ steps. He can either climb one, two or three steps at a time. However, he has to avoid the fifth step on the stairs as it is muddy. How many different ways can he climb up these $$10$$ steps?~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Word Problem Modules->Applying Addition and Subtraction->Simple Word Problems Involving Comparing and Ordering