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The vectors hat i+ 2 hat j + 3 hat k , ...

The vectors `hat i+ 2 hat j + 3 hat k` , `2 hat i - hat j + hat k` and ` 3 hat i + hat j + 4 hat k` are so placed that the end point of one vector is the starting point of the next vector then the vectors are (1) not coplanar (2) coplanar but cannot orm a triangle (3) coplanar but can orm a triangle (4) coplanar and can form a right angled triangle

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Vectors vec a= hat i+2 hat j+3 hat k , vec b=2 hat i- hat j+ hat k and vec c=3 hat i+ hat j+4 hat k , are so placed that the end point of one vector is the starting point of the next vector. Then the vector are (A) not coplanar (B) coplanar but cannot form a triangle (C) coplanar and form a triangle (D) coplanar and can form a right angled triangle

Vectors vec a= hat i+2 hat j+3 hat k , vec b=2 hat i- hat j+ hat k and vec c=3 hat i+ hat j+4 hat k , are so placed that the end point of one vector is the starting point of the next vector. Then the vector are (A) not coplanar (B) coplanar but cannot form a triangle (C) coplanar and form a triangle (D) coplanar and can form a right angled triangle

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The value of p so that vectors 2hat i-hat j+hat k , hat i+2hat j-3hat k and 3hat i+phat j+5hat k are coplanar is