Question

Find the number of subsets the set has. {1, 2, 3, 4, 5, 6, 7

Answer 1

im sure theres some tidy little rule like 2^n or 2^n -1

Answer 2

these are the possible answer
A. 64

B. 127

C. 128

D. 7

Answer 3

spose we got just 3 elements: a,b,c

no elements: { }
1 elements: {a} {b} {c}
2 elements: {a,b} {a,c} {b,c}
3 elements: {a,b,c}

thats a total of 8 sets. which is 2^3

so im gonna take a gander and say its 2^n, when there are "n" number of elements in the set