Problem 290 (difficulty: 4/10)

 (1)  \(\displaystyle \root{n}\of{3}\)      (2)  \(\displaystyle \root{n}\of{\frac{1}{n}}\)      (3)  \(\displaystyle \ds\left(\frac{1+\log2}{n}\right)^n\)      (4)  \(\displaystyle \root{n}\of{2^n+n}\)

Give me another random problem!