Ihave 12 ones, and i am between 20 and 30. who am i ?

Factorize the number 24.

24 = 2 × 12

Note that 12 is one of the factors of 24.

Hence, 24 is the number that lies between 20 and 30 and has 12 ones, as one of its factors.

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step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.