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A class of 22 studients is to be divided into 4 groups consisting of 4,5,6,7 students. In how many ways can this be done? leave answer unsimpiflied

BOS is not working for me atm... i have no gui (i think thats what its called)

This is from HSC 2004, q7 Show that for all positiver integers n, x[ (1+x)^n-1 + (1+x)^n-2 +...+ (1+x)^2 + (1+x) + 1 ] = (1+x)^n-1 ii) Hence show that for 1< and= k < and= n, (n-1) + (n-2) + ... + (k-1) = (n) (k-1) (k-1)...

I want a job after the HSC and want to work before Christmas, is it too late to be looking for a job if I apply after the HSC, or even if I apply now?

I always thought that UNSW was better but I found out if i do engineering at USyd I can study overseas for a year ... which i want to do. Even though UNSW is supposedly better (by popular opinion) , in the end, there are no MAJOR benefits in going to unsw and which uni I go to won't affect me...

Hi, I know this has been asked heaps but I was just wondering which uni is better for engineering. Which one will provide me with more opportunities in finding a job when i graduate. I read that Usyd's engineering courses are outdated and irrelevant, and that UNSW has better facilities and a...

Hello BOS I am in Yr 12 at the moment and the HSC is in a couple of weeks. I need a tutor to help me fix my essays up, they're not so good. Also, I'm looking for someone preferably in the Hills area, but I am willing to travel. PM me, and i'll see if I can get there. Thanks