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प्रश्न
Choose the correct alternative:
If `vec"a" = 2hat"i" + 3hat"j" - hat"k", vec"b" = hat"i" + 2hat"j" - 5hat"k", vec"c" = 3hat"i" + 5hat"j" - hat"k"`, then a vector perpendicular to `vec"a"` and lies in the plane containing `vec"b"` and `vec"c"` is
पर्याय
`-17hat"i" + 21hat"j" - 97hat"k"`
`7hat"i"+ 21hat"j" 123hat"k"`
`-17hat"i" - 21hat"j" + 97hat"k"`
`-17hat"i" - 21hat"j" - 97hat"k"`
उत्तर
`-17hat"i" - 21hat"j" - 97hat"k"`
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