Which of the following is a **double inequality**?
A$x > 5$
B$x = 4$
C$3 \leq x < 7$
D$ax + b < 0$
Answer & Solution
Correct answer: C. $3 \leq x < 7$
A double inequality bounds the variable on **both sides** simultaneously: $3 \leq x < 7$ means $x$ is at least 3 and less than 7.
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: