# Mathematics Trivia

**Tutor description**

1. Simplify the expression (x+a)(x–b)(x+c) ••• (x–z). 2. Arrange the integers 1 through 15 in a row so that the sum of any two adjacent integers is a perfect square. 3. What is the smallest number that when divided by each of the digits 1 through 9 leaves no remainder?

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