CUSAT 2019 BTech Solved Paper

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Question : 156 of 250

Marks: +1, -0

The vectors 2ri+3rj+4rk,ari+brj+crk are normal to each other only if

a=2,b=3,c=−4
a=4,b=4,c=−5
a=4,‌‌b=4,c=5
a=−2,b=3,c=4

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