Question

23 students of a class are arranged in such a way that the front row consists of 15 girls and the second-row consists of 8 boys. The two corner positions of the second-row are reserved for the 2 tallest boys. In how many ways can the students be arranged?

• A. 2!*13!*8!
• B. 2!*15!*6!
• C. 2!*13!*8!
• D. 2!*14!*7!
• E. None of these

Answer 1

The correct option is B

2!*15!*6!

The number of ways in which this can be done is 2!*15!*6!.

15! is the no. of arrangements of the girls, 2! is the no. of arrangement s of the 2 tallest boys and 6! is the no. of arrangements of the remaining 6 boys.