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05-02-2024
Mathematics

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Let →u be a vector coplanar with the vectors →a= 2^i+3^j−^k and →b=^j+^k. If →u is perpendicular to →a and →u⋅→b=24, then |→u|2 is equal to-
a. 256
b. 84
c. 336
d. 315

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