120. Whole numbers are closed under__________
and under______
121. Natural numbers are closed under_________
and under__________
122. Division of a whole number by____________
is not defined.
plzz tell all the answers of fill the blanks with full explain.
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120-whole no. are closed under subtraction
122-The reason it is not defined is because you can't put anything into zero groups. For example, 6 divided by 0 would equal putting zero, let's say rocks, into groups of six. Therefore, anything divided by zero is undefined
121-The natural numbers are "closed" under addition and multiplication
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