What do you call numbers that cannot be arranged into 2-row arrays?
What do you call numbers that can be arranged into 2-row arrays?
(first question)odd numbers
(second question)even numbers
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The numbers that cannot be arranged into 2-row arrays are called "irrational numbers." These are numbers that cannot be expressed as a fraction of two integers. Examples of irrational numbers include √2, π (pi), and e (Euler's number).
On the other hand, the numbers that can be arranged into 2-row arrays are called "rational numbers." These numbers can be expressed as the ratio of two integers. Rational numbers can appear as either terminating decimals or repeating decimals in their decimal representation. Examples of rational numbers include 1/2, 0.75 (3/4), and -2.