(a)[1]
Mia chooses a pen from the box at random. Find the probability that the pen she selects is red.
(b(i))[2]
Complete the tree diagram. The diagram shows First Pen and Second Pen, with the branches named Blue and Red.
(b(ii))[3]
Find the probability that Mia selects two pens of the same colour.
(c)[3]
Find the probability that she chooses 2 blue pens and 1 red pen.