I : If a = i + 4j, b = 2i - 3j, c = 5i + 9j then c = 3a + b
II : If a = 3i - 6j + 2k then the length of the vector is 3.

If a = i + 4j, b = 2i - 3j and c = 5i + 9j then c =

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

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

If a = i - j + 2k, b = 2i + 3j + k, c = i - k , then magnitude of a + 2b-3c is

If a = 3i - 2j + k and b = i + 2j + 5k, then the unit vector along a - b is