SAT Math Multiple Choice Practice Question 330: Answer and Explanation

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Question: 330

22. If b is a positive integer less than 100, then how many integer pairs (a, b) satisfy the equation

A. 7
B. 8
C. 9
D. 10
E. 11

Correct Answer: C


Try positive integer values of a to see how many work:

There are nine integer pairs that satisfy the equation.

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