UPSC NDA II 2014 Mathematics Paper

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Question : 91 of 120
 
Marks: +1, -0
If |
→
a
|
=2
|
→
b
|=5
and |
→
a
×
→
b
|
=8
,then what is
→
a
.
→
b
equal to ?
[NDA II 2014]
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