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The scalar product of two vector a = 3ve...

The scalar product of two vector `a = 3vechati-4vechatj+vechatk` and `vecb=-2vechati+ vechatj +3vechatk ` is

A

-7

B

20

C

`-20`

D

`-25`

Text Solution

Verified by Experts

The correct Answer is:
D
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