Math Chapter Wise Operations On Vectors English MCQ NVS PGT 2022 Q.If a,b,c are unit vectors, then 2 2 2 ˆ ˆ ˆ ˆ ˆ ˆ a b b c c a − + − + − does not exceed: A4 B9 C8 D6 Show answer Correct answer: 9