Swiss

Thank's for your help I guess I got it too ___________ see you in the math section

On how many ways can the letters of the word "COMPUTER" be arranged? 1) Without any restrictions. 2) M must always occur at the third place. 3) All the vowels are together. 4) All the vowels are never together. 5) Vovels occupy the even posotions. my soultions.. 1)8! 2)7! 3)3!*5! 4):crazy: 5)6*3!*5! does anyone can help me with no.4

I do not understand why E) is right? Why do they use and and not a comma? :hmm: OG47 Displays of the aurora borealis, or "northern lights," can heat the atmosphere over the artic enough to affect the trajectories of ballistic missiles, induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines. A) to affect the trajectories of ballistic missiles, induce E) to affect the trajectories of ballistic missiles and induce Thank's for the explanation

Or with some logic The first one can be "head" or "number" -> probabiluty =1 then go for the next ones each 1/2 so for "head" 1*1/2*1/2=1/4 or "number" 1*1/2*1/2=1/4 do not count them together because you did the selection at the beginning (which was the logic)

Hi Jamesbond007, Thanks for the link I scored a 190wpm with an accuracy of 75%. So, I guess there is some work to do. CU Swiss :tup: