Question:medium

If vectors \( 2i + j + k \), \( 2j - 3k \), and \( 3i + j + 5k \) are coplanar, then the value of \( a \) is

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For three vectors to be coplanar, their scalar triple product must be zero.

Updated On: Mar 25, 2026

2
-2
4
-4

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The Correct Option is D

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