Q7. What is a vector of magnitude 5 that is perpendicular to both vector a = i + 3j - k and vector b = 3i - j?Mathematics — NUST Mock By IBAGRADS 3 — Question 7 of 200A. 5/√110 (-i - 3j - 10k)B. 5/√17 (-i - 3j - 10k)C. 5/√110 (-i + 3j - 10k)D. 5/√17 (-i + 3j - 10k)Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →