(i) X = {1, 3, 5}, Y = {1, 2, 3}
\(X ∩Y\) = {1, 3}
(ii) A = {a, e, i, o, u}, B = {a, b, c}
\(A ∩B\) = {a}
(iii) A = {x: x is a natural number and multiple of 3} = (3, 6, 9 ...}
B = {x: x is a natural number less than 6} = {1, 2, 3, 4, 5}
\(A ∩B\) = {3}
(iv) A = {x: x is a natural number and \(1 < x ≤6\)} = {2, 3, 4, 5, 6}
B = {x: x is a natural number and \(6 < x< 10\)} = {7, 8, 9}
\(A ∩B = \phi\)
(v) A = {1, 2, 3}, B = \(\phi\)
\(A ∩B = \phi\)
Find the mean and variance for the following frequency distribution.
Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
Frequencies | 5 | 8 | 15 | 16 | 6 |
Some important operations on sets include union, intersection, difference, and the complement of a set, a brief explanation of operations on sets is as follows:
1. Union of Sets:
2. Intersection of Sets:
3.Set Difference:
4.Set Complement: