Q.

If a+2b+3c=12,a,b,cR+,then ab2c3 is 

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a

23

b

26

c

26

d

None of these

answer is C.

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Detailed Solution

Given that,a+2b+3c=12

and a, b, c  are  positive  real numbers

Now,   AMGM

    a+b+b+c+c+c6ab2c36    a+2b+3c6ab2c36ab2c326

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If a+2b+3c=12,a,b,c∈R+,then ab2c3 is