# algerbra

If n(A)= 8, then how many proper subsets does A have?

1. 👍 0
2. 👎 0
3. 👁 58

## Similar Questions

1. ### algebra

How many sets are subsets of set B? List the subsets of set B. Which are proper subsets? B= {1,2,3,4,5} would it be 5 subsets (1 for each number? the subsets would be 1,2,3,4,5 not sure about a proper subset

asked by Kristi on May 10, 2010
2. ### Modern (Abstract) Algebra

Let f:A->B, where A and B are nonempty Prove that f(S1 - f(S2) is a proper subset of f(S1 -S2) fo all subsets S1 and S2 of A. Give an example where there are subsets S1 and S2 of A such that f(S1) - f(S2) does not equal f(S1-S2)

asked by dreww1961 on October 15, 2010
3. ### Modern (Abstract) Algebra

Let f:A->B, where A and B are nonempty Prove that f(S1 - f(S2) is a proper subset of f(S1 -S2) fo all subsets S1 and S2 of A. Give an example where there are subsets S1 and S2 of A such that f(S1) - f(S2) does not equal f(S1-S2)

asked by dreww1961 on October 15, 2010
4. ### math

How are the ideas of subsets and proper subsets used in counting to identify relationship between whole numbers?

asked by tammy on October 23, 2010
5. ### Math

I was to answer this question: How are the idea of subsets and proper subsets used in counting to identify relationships between whole numbers? Here is what I said: If A is a subset of B, a=b. If A is a proper subset of B, a

asked by B.B. on June 4, 2009
6. ### Math

3 questions if you can help me. 1. Calculate the number of subsets and the number of proper subsets for the set. {x|x is a day of the week} 2. Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w,

asked by Roger on June 9, 2011
7. ### Math

3 questions if you can help me. 1. Calculate the number of subsets and the number of proper subsets for the set. {x|x is a day of the week} 2. Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w,

asked by Roger on June 9, 2011
8. ### Algebra

Let C = {p, l, u, s}. How many proper subsets does C have?

asked by Sarah on January 11, 2010
9. ### math

Let C = {p, l, u, s}. How many proper subsets does C have?

asked by Kim on August 10, 2009
10. ### math

Consider the following subsets of R^2: A={(x,y)∈R^2 : x2 +y2 ≤9}, B={(x,y)∈R^2 : y≥2x+1}, C = {(x, y) ∈ R^2 : y ≥ (x + 1)2}. Prove that C is a proper subset of B.

asked by s17 on October 29, 2018

More Similar Questions