1.

If a,b,c are positive real numbers then (1+a)^7(1+b)^7)1+c)^7 (A) lt7^7a^4b^4c^4 (B) le7^7a^4b^4c^4 (C) gt7^7a^4b^4c^4 (D) none of these

Answer»

`pgt33^7a^3b^3c^3`
`pgt3^7a^(21)B^(14)c^7`
`pgt77(1+a)^7(1+b)^7(1+c)^7`
`pgt7^7a^4b^4c^4`

ANSWER :D


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