Answer: 5040
Step-by-step explanation:
There are 7 choices for the first slot, then 6 for the second, 5 for the third, and so on until we get down to 1 choice for the last slot
7*6*5*4*3*2*1 = 5040 different ways to do those seven chores where order matters.
For more information, check out the concept of factorials.