The numbers ( 2 + 1), ;1, ;( 2 - 1) will be in - Vidyadip

MCQ

The numbers $(\sqrt 2 + 1),\;1,\;(\sqrt 2 - 1)$ will be in

A
$A.P.$
✓
$G.P.$
C
$H.P.$
D
None of these

✓

Answer

Correct option: B.

$G.P.$

b
(b) The numbers $(\sqrt 2 + 1),\;1,\;(\sqrt 2 - 1)$ will be in $G.P.$

$\therefore $ ${(1)^2} = (\sqrt 2 + 1)(\sqrt 2 - 1) = {(\sqrt 2 )^2} - {(1)^2} = 2 - 1 = 1$.

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