For the relation $R = \{(1,2), (2,3), (3,4), (4,5), (5,6)\}$ on $\{1,2,3,4,5,6\}$, what is the **domain**?
A$\{2, 3, 4, 5, 6\}$
B$\{1, 2, 3, 4, 5\}$
C$\{1, 2, 3, 4, 5, 6\}$
D$\{6\}$
Answer & Solution
Correct answer: B. $\{1, 2, 3, 4, 5\}$
Domain = set of first elements of the pairs = $\{1, 2, 3, 4, 5\}$. (B is the *range*; C is the *codomain*.)
Related questions
Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE For [[1,2],[2,4]], the determinant equals:If A is invertible, |A^{−1}| equals:For a 3 × 3 non-singular A with |A| = 5, the value of |adj A| is:For a non-singular square matrix A of order n, |adj A| equals:For non-singular A, B of the same order, (AB)^{−1} equals:For a non-singular A, (A^{−1})^{−1} equals: