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If the matrix … is skew-symmetric, then the value of a^2 + b^2 + c^2 is:

CUET UG 2023 — Mathematics Applied-Mathematics

2023mcqmedium

If the matrix [a−25b20−15153c0]\begin{bmatrix} a & -2 & 5b \\ 2 & 0 & -15 \\ 15 & 3c & 0 \end{bmatrix}​a215​−203c​5b−150​​ is skew-symmetric, then the value of a2+b2+c2a^2 + b^2 + c^2a2+b2+c2 is:

Official previous-year question

Held on 25 May 2023 · Verified 13 Jul 2026.

Options

  1. A

    15

  2. B

    34

  3. C

    25

  4. D

    16

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