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If (overset to a xx overset to b)^2 + (o...

If `(overset to a xx overset to b)^2 + (overset to a.overset to b)^2=676` and `|overset to b|=2` then `|overset to a|` is equal to

A

13

B

26

C

39

D

None of these

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The correct Answer is:
A
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