binary + time

pheww.. I was certainly exhausted these couple of days, have been studying for my 'dear' Artificial Intelligence exam and going here and there after my exam hohoho.. The first time I read the exam paper, I was telling myself.. yesh! I know how to answer these questions, except for a question which included binary number conversion, whew I learnt binary in the first sem (im currently in my 4th sem) and hohoho a student like me would only 'allocate' memories for subjects during the semester where im doing those subjects which i will deallocate in the end of the semester hahaha.. so in this case i seriously have NO IDEA how to convert a binary number to a decimal number.. i know i know, so stupid rite?? hiks yea to think about it again i feel so stupid.. this exam is the worst exam this sem, not only because i cant do the binary conversion (which i actually managed to convert in a manual way, please dont ask me how.. just so you know it takes AGES to do T_T ) but also because I knew only 5 minutes before the exam finished that I did something wrong, I applied the wrong equation, omg Laur.. how could you?!! ARGHHHH.. and this cost me hiks hiks.. hiks hiks.. to.. hiks.. LOSE 15 MARKSSSSS omg! T_T if only i can get another 5 mins i would have change my answer hiks hiks.. the lesson from AI exam is that, first I have to concern about the time next time i have another exam :( oh well what to do rite?? we cant undone sth that has already happened and i will surely learn from my mistake.. hehe but i still hope ill get some mark tho :) hihihi.. oh well thats the end of this sem.. all of the hard works and all of the suffering ive been through.. hehe now its sem break!! yeay!!! HOLIDAY!! yayy!! hehe just wanna enjoy the holiday and still hoping that ill get good grades too :D and for my friends too :D happy holiday guysss, have fun ;)