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IIT JEE Advanced 2007 Paper 2

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Question : 50

Total: 66

Let

be unit vectors such that

. Which one of the following is correct?

→
a
×
→
b
=
→
b
×
→
c
=
→
c
×
→
a
=
→
0
.
→
a
×
→
b
=
→
b
×
→
c
=
→
c
×
→
a
≠
→
0
.
→
a
×
→
b
=
→
b
×
→
c
=
→
a
×
→
c
≠
→
0
.
→
a
×
→
b
,
→
b
×
→
c
,
→
c
×
→
a
are mutually perpendicular.

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