There are 3 red marbles and 6 blue marbles in a bag. If Tad pulls out
one marble and then another, what
is the probability that both marbles
in his hand will be red?

1/12

Step-by-step explanation:

P(red,red) = 3/9 x 2/8 or 1/3 x 1/4

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