If a = i- 2j + k, b = 2i + j - k, c = 4i + 4j + 3k then `|(a xx b) xx c|` =

If a = 3i - 2j + k, b = 2i - 4j - 3k, c = -i + 2j + 2k then a + b + c =

If a = 2i - j + k, b = 3i + 4j - k then |a xx b| =

If a = I + 2j - 3k, b = 2i + j + k, c = I + 3j - 2k then (a xx b) xx (b xx c) =

I : If a = 3i - 2j + k, b = 2i - 4j - 3k, c = -i + 2j + 2k then a + b + c = 4i + 4j II : If a = i - j + 2k, b = 2i + 3j + k, c = i - k, then magnitude of a + 2b - 3c is sqrt(78)

If a = 2i + 3j + 6k, b = 3i - 6j + 2k, c = 6i + 2j - 3k then a xx b =

If a = 2i + 3j - 4k, b = I + j + k and c = 4i + 2j + 3k, then |a xx (b xx c)| =

The ascending order of the following (A) volume of the tertrahedron formed by 4i + 5j + k. - j + k. 3i + 9j + 4k, -4i + 4j + 4k (B) Volume of the parallelopiped with edges 2i + 3j + 4k. I + 2j - 2k, 3i - j + k (C ) |a xx (b xx c)| where a = 2i + 3j - 4k, b = i j + k, c = 4i + 2j + 3k (D) |(a xx b) xx c| where a = i - 2j + k, b = 2i + j - k, c = 4i + 2j + 3k

If a = I + j - k, b = I - j + k, c = I - j - k then a xx (b xx c) =