Answer:
10.5
Step-by-step explanation:
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Given :
A vector v = 10i - 24k.
To Find :
A vector of magnitude 3 in the direction of v = 10i - 24k.
Solution :
Unit vector in the direction of vector v is :

Now , vector of magnitude 3 in direction v is :

Hence , this is the required solution .
Your answer is c
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Hope this helped you :)
119,644 is the answer I believe