In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate.

Question: In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate.Solution:Let the Arrangement be,B G B G B G B4 boys can be seated in 4! WaysGirl can be seated in 3! Ways∴ Required number of ways,= 4! × 3!= 24 × 6= 144