Two marks example problems II — task. Mathematics State Board, Class 9.

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1. If \(A =\{-3, -2, 1, 4\}\) and \(B = \{0, 1, 2, 4\}\), find:

(i) \(A - B\) \(=\)

\{i, i\}

(ii) \(B - A\) \(=\)

\{i, i\}

2. If \(A = \{6, 7, 8, 9\}\) and \(B = \{8, 10, 12\}\) find, \(A \Delta B\).

\(A \Delta B\) \(=\)

\{i, i, i, i, i\}

3. Verify whether \(A = \{20, 22, 23, 24 \}\) and \(B = \{25, 30, 40, 45 \}\) are disjoint sets.

[Note: Enter the numbers in ascending order.]

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4. Two marks example problems II