In a large garden there are seven fruit trees and 13 other types of tree. Six of the trees have birds. nesting in them but only two of these are fruit trees.

(a) Copy and complete the table below to illustrate this information. Fruit tree Other tree Total Bird's nest 2 6 No nest Total 7 13 The owner of the garden has given permission for Abdul to play in the garden but has instructed him not to climb any fruit trees or trees that have birds nesting in them. Abdul selects a tree at random to climb.

(b) Find the probability that Abdul will obey the owner's instructions. Given that Abdul climbs a fruit tree,

(c) find the probability that the tree has birds nesting in it. (L)