defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Vector Algebra Properties of Vectors

यदि तीन सदिश 1î - 2ĵ + 3k̂, 3î + 1ĵ - k̂ और 2î + λĵ + 4k̂ समतलीय हैं, तो λ का मान क्या है?

1

- 3

2

- 2.9

3

- 2.6

4

- 2.8

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