Official Guide practice (find these in your Official Guide or at www.gmatclub.com)
PS04797 If x is a positive integer and 4x − 3 = y,
PS00307 At the start of an experiment
PS16811 What is the smallest integer n
PS16146 What is the difference between the sixth and the fifth terms
PS16899 (1/2)^-3
If r and s are positive integers such that
If a and b are positive integers and
If x and k are integers and
PS19941.02 Given that 1^2 + 2^2 +
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