20.41312

(a) The given number truncated to four decimal places is

87.12-83.42 what is the difference

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Write word phrase to represent the numerical expression below. 4 + (27-10)

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In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student is chosen randomly from this group. What is the probability that the student takes either Art or Music courses? 57

5% of what number is 63?

Find the sum of the "n" terms of the series: Sn=1²+3²+5² + ... + (2n-1) ²