If 13 a = 3i + 4j + 12k, 13b = 4i - 12j + 3k, 13 c = 12i + 3j - 4k then `a xx b` =

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

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

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

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

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

If a = 2i + 2j + k, b = i + j, c = 3i + 4k, d = 12i + 3j + 4k then the descending order of their magnitudes is

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