7) Yana has 18 students in her class (9 boys, 9 girls). How many ways can she line them up if: a) The girls must line up first. b) They must line up boy/girl/boy/girl etc. 9 . 9 - 8 - 8 - 9 ! .9 ! 11 c) Ronnie must be first and Taylor must d) The 5 problem kids must be the first 5. be in the last five. c) Joey cannot be first and Lola must be d) They must line up boy/girl/boy/girl etc. and third and Tugger must be last? Joey must be first and Lola must be last