JEE Main 21 Jan 2026 Shift 1 Paper Solved Paper

Section: Mathematics

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Question : 5 of 75

Marks: +1, -0

Let

→

a

=−

∧

i

+2

∧

j

+2

∧

k

,

→

b

=8

∧

i

+7

∧

j

−3

∧

k

and

→

c

be a vector such that

→

a

×

→

c

=

→

b

. If

→

c

⋅(

∧

i

+

∧

j

+

∧

k

)=4, then |

→

a

+

→

c

|2 is equal to :

[21 Jan 2026 Shift 1]

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