JEE Advanced Model Paper 11 with solutions for online practice

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Question : 44 of 60

Marks: +1, -0

Let

−

a

= −

−

i

-

−

k

,

−

c

=

−

i

+2

−

j

+3

−

k

be three given vectors. If

−

r

is a vector such that

−

r

×

−

b

and

−

r

.

−

a

= 0 then

−

r

.

−

b

=

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