$10$ students are to be seated in $10$ seats. The seats are in $2$ rows of $5$ seats each. $3$ students are nearsighted and need to sit in the front. $2$ students are farsighted and must sit in the back. How many ways are there to seat the students?
2026-04-20 09:57:39.1776679059
Seating people in $2$ rows with conditions
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The setup to the answer:
First we need to choose $3$ of the $5$ front seats for the three nearsighted students. Then we can arrange the nearsighted students in the chosen seats in $3!$ ways.
Second, we must choose $2$ of the $5$ back seats for the farsighted students. Then we can arrange the farsighted students in the chosen seats in $2!$ ways.
Finally we must sit down the remaining $5$ remaining students in the remaining chairs.
Now see if you can use this to figure out the problem