Let and . If is positive, then which one of the following is correct? मान लीजिए और है। यदि धनात्मक है , तो निम्नलिखित में से कौन-सा सही है ?

Explanation: Step 1: Expand the determinant Let be the value of the determinant: Step 2: Substitute and Since and , the expression simplifies to: Step 3: Evaluate the condition The problem states that the determinant is positive, meaning . Substituting the expression for : Rearranging the inequality: Conclusion: By expanding the determinant and substituting the given variables, we find that the condition is equivalent to . Final Answer: The correct option is (c) .

How do I solve NDA 2026 Mathematics questions?

Practice NDA 2026 Mathematics previous year questions with step-by-step solutions on Mathem Solvex. Each question includes a detailed explanation and video solution to help you master the concept quickly.

What is the difficulty level of NDA Mathematics questions?

NDA Mathematics questions range from moderate to advanced difficulty. Consistent practice with official previous year papers and topic-wise drills on Mathem Solvex is the most effective preparation strategy.

Are NDA previous year papers available for free?

Yes. Mathem Solvex provides free access to NDA previous year question papers and topic-wise PDFs. You can download them or attempt them as timed live mock tests directly on the platform.

NDA 2026 — Mathematics PYQ

NDA | Mathematics | 2026

Let $p = (x + y + z)$ and $q = x y z$ . If $x 11 am p; 1 am p; y am p; 1 am p; 1 am p; 1 am p; z$ is positive, then which one of the following is correct?

मान लीजिए $p = (x + y + z)$ और $q = x y z$ है। यदि $x 11 am p; 1 am p; y am p; 1 am p; 1 am p; 1 am p; z$ धनात्मक है, तो निम्नलिखित में से कौन-सा सही है ?

Choose the correct answer: