When Moses multiplied 2100 by a 2 digit whole number, he got a square number. Which of the following is the smallest number that gives a square number when multiplied with 2100?
84
48
21
24
My Response : 21 Explanation: I tried each possible solution. First, I multiplied 2100 by each number. Then, I square rooted each number for a perfect square. 2100 times 21= 44100 the square root of 44100 is a perfect number 210.
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