Respuesta :
Answer:
300
Step-by-step explanation:
You most likely want combinations not permutations - unless you are bothered about the order. What I mean is this: if you choose strawberry then chocolate, is that considered to be the same thing as choosing chocolate then strawberry? If it's considered to be the same, then that's a combination; if it's considered to be different, then that's a permutation.
When we pick our first flavour, there are 25 choices. When we pick our second flavour there are only 24 choices (because we must pick a different flavour). So the number of permutations is 25×24 = 600.
To find the number of combinations, we must divide this by the number of different orders in which we could pick the same 2 flavours. In this case, that's just 2 (e.g. strawberry then chocolate, or chocolate them strawberry). So the number of combinations is 25×24÷2 = 300.
