There are 4 seats available at a table and 12 students are looking for seats. In how many ways can the seats at the table be filled with 4 of these 12 kids

12C4

Step-by-step explanation:

use combination since order doesn't matter here.

your answer would be b

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b