UPSC NDA II 2018 Mathematics Solved Paper

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Question : 47 of 120

Marks: +1, -0

If a, b, c are in AP or GP HP, then

a−b

b−c

is equal to

[NDA II 2018]

b
a
or 1 or
b
c
c
a
or
c
b
or 1
1 or
a
b
or
a
c
1 or
a
b
or
c
a

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