If $f: \mathbb{N} \to \mathbb{N}$ is defined by $f(x) = 2x + 1$, what is $f(5)$?
A$7$
B$9$
C$11$
D$10$
Answer & Solution
Correct answer: C. $11$
$f(5) = 2(5) + 1 = 11$.
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: