4. Let X1, X2, X3 ..., X₁ are independent random variables from pdf f(x) corresponding to cdf F(x). Find the distribution of a) U= min(X1, X2, X3 ..., Xn), b) V = max(X1, X2, X3 .... Xn) and c) WV- U. Also write the above distributions if the distribution of X-Uniform(0, 1).