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Quantitative Aptitude
Highest Power of a Number
If three posi...
Question
If three positive numbers are a,b,c are in AP with abc =4 , then minimum value of b is
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Solution
As
we
know
that
,
AM
≥
GM
So
considering
three
number
a
,
b
,
c
that
are
in
AP
as
given
.
so
a
+
b
+
c
3
≥
abc
1
3
Given
abc
=
1
so
,
a
+
b
+
c
3
≥
1
or
a
+
b
+
c
≥
3
Now
a
,
b
,
c
are
in
AP
so
,
2
b
=
a
+
c
putting
this
we
get
,
3
b
≥
3
or
b
≥
1
so
minimum
value
of
b
is
1
.
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