JEE Main 25 Feb 2021 Shift 1 Solved Paper

Section: Mathematics

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Question : 88 of 90

Marks: +1, -0

Let a=

∧

i

+2

∧

j

−

∧

k

,b=

∧

i

−

∧

j

and c=

∧

i

−

∧

j

−

∧

k

be three given vectors. If r is a vector such that r×a=c×a and r⋅b=0, then r⋅a is equal to ......... .

[25 Feb 2021 Shift 1]

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