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This problem trains for: SAT-I, AMC-8, GMAT.

If a is an element of the set:

equation

and b is an element of the set:

equation

how many elements are there in the set C formed by the numbers:

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The values that can be obtained are:

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equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

equation

Only the distinct values form the set C:

equation

The set C has 11 elements.