It can be written as a fraction, so it is rational.
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Rational , because it can be converted to a fraction. 7.76 = 7 76/100 = 7 38/50 = 7 19/25 NB Irrational numbers cannot be converted tpo a quotient. 'pi = 3.1415936.... ' it the most famous irrational number. When you are given pi = 3.14' in school , this is only an approximation.
It is 76 and 3/100 as a mixed number
76-2*6=444
76
mean = (65 + 56 + 57 + 75 + 76 + 66 + 64)/7 = 65.57 median = "middle" number = 65 mode = most common number = all are equally common