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CBSE Class 12 Math 2020 Outside Delhi Set 2 Solved Paper

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Question : 2 of 11
Marks: +1, -0
Let
→
a
=
^
i
−2
^
j
+3
^
k
. If
→
b
 is a vector such that
→
a
,
→
b
=|
→
b
|2 and |
→
a
−
→
b
|=√7, then |
→
b
| equals
Solution:     👈: Video Solution
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