Search any question & find its solution
Question:
Answered & Verified by Expert
If $\mathrm{A}=\{\mathrm{a}, \mathrm{b}, \mathrm{c}\}$, then what is thenumber of proper subsets A?
Options:
Solution:
1499 Upvotes
Verified Answer
The correct answer is:
7
Let $A=\{a, b, c\} \Rightarrow O(A)=3$
Now, number of proper subsets of $\mathrm{A}=2^{O(A)}-1=2^{3}-1=7$
Now, number of proper subsets of $\mathrm{A}=2^{O(A)}-1=2^{3}-1=7$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.