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UPSC NDA 2 2016 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow:
Let

→

a

=

⋀

i

+

⋀

j

,

→

b

=3

⋀

i

+4

⋀

k

and

→

b

=

→

c

+

→

d

,where

→

c

is parallel to

→

a

and

→

d

is perpendicular to

→

a

[NDA II 2016]

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Question : 66

Total: 120

If

, then which of the following equations is/are correct?
1. y−x=4
2. 2z−3=0
Select the correct answer using the code given below:

1 only
2 only
Both 1 and 2
Neither 1 nor 2

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