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hackerrank.comMean, Var, and StdProblem link : https://www.hackerrank.com/challenges/np-mean-var-and-std/problemDifficulty : Easy Tipnp.set_printoptions(legacy='1.13')Still this is requiredPlease understand how to use np.mean(), np.var() and np.std() Solution import numpy as np np.set_printoptions(legacy='1.13') N, M = list(map(int, input().split(' '))) arr = np.array([input().split(' ') for _ i..