Skip to content / Đến nội dung
ThichHocToan.com

TIMO - 2018 - Grade 7 - Heat Round - Paper 2 Question 22

TIMO · TIMO - 2018 - Grade 7 - Heat Round - Paper 2

Question 22

Three boys Bobby, Benson, Benny and three girls Grace, Gloria, Georgia are to be seated in a row according to the following rules: 1. A boy cannot sit next to another boy. 2. A girl cannot sit next to another girl. 3. Benny must sit next to Gloria. Find the number of the combination(s) satisfying the above condition.