exam Maths Puzzle Numerical Ability

How many pairs of positive integers (a,b) satisfy 1/a + 1/b = 1/2004?

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exam Other Question

2-7c-1 = 3c- 19c+3
6 4 Hello I could really use some help with this problem: Solve by completing the square. Write the solutions in simplest radical form. The equation is x to the 2nd power + 6x = 3 Thanks for any help you can give me.