Home › CBSE Class 12 (Commerce) › Mathematics › Vector Algebra › Compute (3i − j + 2k) · (i + 4j + 5k).
Compute (3i − j + 2k) · (i + 4j + 5k).
A12
B9
C3
D17
Answer & Solution
Correct answer: B. 9
The sum 3 − 4 + 10 equals 9.
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