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If a = 2i - 7j + k and b = i + 3j - 5k a...

If `a = 2i - 7j + k and b = i + 3j - 5k and a.mb = 120`,
then the value of m is equal to

A

5

B

-24

C

-5

D

120

Text Solution

Verified by Experts

The correct Answer is:
C
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