Penny's Pizza

  Penny’s favourite pizza take-away offers 6 toppings: ham, onions, mushrooms, pineapple, tomato and peppers. Penny ordered a pizza with ham and pineapple. Unfortunately the server only wrote down that she wanted 2 toppings but didn’t write down what they were. The cook decided to pick two toppings at random.

What is the probability that Penny will get the pizza she ordered?