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Which of the following is the mathematical term for a radical that expresses an irrational number:

1. turk
2. radicand
3. finical
4. surd

Answer: D

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Assuming a year in a dogs life is equivalent to 7 years of a humans life, what is 1 hour of a dogs life approximately equivalent to in a humans life?	Systematic random samp ling is to be used to select 5 addresses from an ordered list containing 500 addresses. A 1- in-100 systematic sample is used to select the 5 addresses. What is the chance that any specific address will be chosen: