Nadia's class took a math test. The median score on the test was 72% and the mean of the test scores was 72%. What does this tell you about the data set?

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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