1) In which category is ∏∼3.14 in? a) irrational numbers b) natural numbers c) integers d) rational numbers 2) -2 is not natural number? a) correct b) incorrect 3) letter i in complex numbers means: a) jota b) iota c) ota d) aota 4) divide also means... a) to categorize b) separate c) split d) all of the above 5) rational numbers can't be written as a fraction: a) correct b) incorrect

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