### Instruction: In how many ways can Michael choose 3 out of 8 math classes to take?### Response: I need to find the number of combinations of 8 math classes taken 3 at a time.
I recall that the formula for combinations is nCr = n!/(r!(n-r)!), where n is the total number of items, r is the number of items chosen, and ! means factorial.
In this case, n = 8 and r = 3, so I plug them into the formula and simplify.