For n×m matrix ,the first number ie, 'n' represents the number of rows while the second number 'm' indicates the number of columns.
For multiplication, the number of columns of the first matrix must be the same as the number of rows of the second.Here number of columns of 1st matrix is 3 which is not equal to number of rows of 2nd matrix which is 2.
So multiplication of above matrices are not possible.