Answer:
512
Step-by-step explanation:
the number of subsets of the set {1, 2, 3, ..., 9} is : 2^9 = 512
9514 1404 393
16832
As your problem statement says, ...
2104 × 8 = 4×8 +00×8 +100×8 +2000×8
= 32 +0 +800 +16000
= 16,832
3.62 miles need to be run
20
