How many 5-number combinations are there for numbers 1-35?

Answer 1

If the order matters, then there are (35 x 34 x 33 x 32 x 31) = 38,955,840 possibilities.

If the order doesn't matter, then there are 38955840 / (5 x 4 x 3 x 2) = 324,632 possibilities.

In other words, your chance of winning is about the same whether you buy a ticket or not.