Which of the following are pythagorean triples? check all that apply.
a. 24, 35, 41.2
b. 9, 14, 17.1
c. 12, 16, 20
d. 5, 13, 16
e. 8, 15, 17
f. 32, 60, 68

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