Calculate error value, & and relative error, Erel of the following number and state either the approximate value is a good approximation or not. a) N = 2.71828182, n = 2.7182 b) N = 98.350, n = 98.000 c) N = 0.000068, n = 0.00006 d) N = 2.31710-4, n = 0.00023