If $$n$$ is a positive integer, then $${\left( {\sqrt 3 + 1} \right)^{2n}} - {\left( {\sqrt 3 - 1} \right)^{2n}}$$ is :
JEE · Math · previous-year question
- A.an irrational number
- B.an odd positive integer
- C.an even positive integer
- D.a rational number other than positive integers
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