The number of subsets of a set is 64. What is the number of elements in the set?
Answer: C
If a set has 'n' elements, the total number of its subsets is given by the formula \(2^n\).
We are given that the number of subsets is 64.
So, \(2^n = 64\).
We know that \(2^6 = 64\).
Therefore, n = 6. The set has 6 elements.