Question

Let $\vec a =3î + ĵ -2k̂$, $\vec b =4 î + ĵ +7 k̂$ and $\vec c =î -3 ĵ +4 k̂$ be 3 vectors. If a vector $\vec p$ satisfies $\vec p_x \vec b=\vec c_x\vec b$ and $\vec p_x\vec a = 0$ then $\vec p.( î - ĵ - k̂ )$ is equal to

• A. 32
• B. 23
• C. 16
• D. 61

Answer 1

Answer: (A)

32

Answer 2

The correct option is (A): 32