aieee level p&c

12

aaj mera din aacha ni hai

i tied two gals togethr so nw u hav 2 gals n 3 guyz
u can make 3 guyz sit in (n-1)! ways ie 2! ways

nw u get 3 gaps usmein gals
3C2 (2!)

so answer cumz out 2 b

3C2(2)! (2)!

total no. of ways of arranging 6 persons - no. of ways in which all 3 girls sit together - no. of ways in which no girl sit together

letz group any 2 girlz .............

now there are 5 ppl .........

now keeping the girls fixer totally 3C2(2!)4! ways are possible ..........

NOW KEEPING 3 GIRLS TOGETHER .........

3!(3!) WAYS ARE POSSIBLE ..................

6(4*3*2*1) - (3*3*2*2)

(3*2)(24 - 6)

6(18)

108.......

deleted all ma posts..........

misunderstood d question

no. of ways of arranging 3 boys and 3 girls on a round table such that only 2 and any 2 girls sit together

I am getting 12

4!*2! - 3!*3!=12