Question

A school bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel in the bus. How many ways can the students be seated if all the first-grade students occupy the first 3 rows?
25P20
5P5 × 20P15
15C15 × 10C5
15P15 × 10P5
15P15 × 10C5

Answer 1

@Donblue22

Answer 2

@vickycamargo

Answer 3

@RennesmeeCullen

Answer 4

i give metal if you can answer this

Answer 5

Let me see, shall we?

Answer 6

Ans: D
All the 15 first first grade students want to sit in the first 15 seats....so no. of ways if permuting them is 15! followed by
the remaining 5 students have a total of 10 seats...so total no. of ways of permuting 5 students in 10 seats in 10P5...
So, 15P15 x 10P5

~credit to Yahoo! for the answer~

There you go!

Answer 7

lets begin

Answer 8

see me latter to get more metals