A bag contains 3 red pens 5 blue pens and 2 black pens a pen is selected at random and is not replaced what is the probability of selecting a red pen then a blue pen

1/6

Step-by-step explanation:

1/6

Step-by-step explanation:

3 red

5 blue

2 black

10 total

pick a red pen first: 3/10

pick a blue pen next: 5/9

3/10*5/9 = 15/90 or 1/6

D.  3

Step-by-step explanation:

Look at rectangle ABCD.  It's dimensions are 1 by 2 (1 unit high and 2 units long).  Now look at rectangle A'B'C'D', the image.  It's a rectangle that is 3 by 6.

The dimensions of the original rectangle have been multiplied by 3.