Question 29
A school canteen serves halo-halo dessert to its students. Halo-halo is a mixture or concoction of local fruits and other sweet ingredients with shaved or crushed ice on top and doused with milk. Suppose that in a mixture of other ingredients there are four more that can be added to the mix: ube, langka, banana, macapuno and you have to choose only 2 from any of these additional 4 ingredients. Suppose that you can also choose either cow’s milk or carabao’s milk and that you can also choose between shaved ice or crushed ice. How many possible halo-halo orders are there?