Find a counterexample to show that the following statement is false: a) if a/bc, then a/b or a/c.

Check.

Step-by-step explanation:

Counterexample:

Let a = 10, b=4 and c=5. We have that 10|4*5 but and  .

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