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Class 12 ncert maths solution chapter vector algebra exercise 10.2 Qno.4,5

If 27 abc>= (a+b+c)^3 and 3a +4b +5c=12 then 1/a^2+1/b^3+1/c^5=10 , where a, b, c are positive real numbers. Statement-2: For positive real numbers A.M.>= G.M.

Class 12 maths ncert solution chapter vector algebra Ex-10.2 Qno.1