Further Mathematics Paper 2, WASSCE (PC), 2016

Question 12

 

A survey indicated that 65% of the families in a town own cars.  Find, correct to three decimal places, the probability that among 7 families selected at random in the town;

  1. exactly 5 of them own cars.
  2. 3 or 4 of them own cars.
  3. at most 2 of them own cars.

Observation