- Messages
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sse2010 said:ajmaeen said:MashALLAH my paper wnt really goood......... was a bit different but mine went awesome.... did it in 45 mins.........
they were mutually exclusive.......... not independant........... last ques last part was 14........ bcz if there were three card and th pink and green were not together then they should be on the sides........ and it could start with green or with pink ..... and the choice for the remaining one would be 7C1........ so the ans was : 2*(7C1)= 14.............
dude it wasnt 14...jus lemme giv u an example...wat if neither green nor pink was selected...even then the pink n green wudnt be together cuz they r not selected at all...so like wise pink alone cud be selected n not green..n green alnone can be selectd n not pink...n both can be selectd...so da answer was 476!
Well it Couldnt be 14 as the person abv proved it.. but it couldnt be 476 either because i think u misread the question .. It said how many arrangement OUT OF THE ABOVE contains no green card next to each other.. and in the abv part we had to cal culate the arrangements with PINK included.. so u have taken one extra probability of NO PINK NO GREEN !! ... I wrote 126 but i think the correct answer would be 126 + 14 ... I wud get 1 mark there