# GMAT 考满分题库

Magoosh - - 404

$10^{x} + 10^{y} + 10^{z} = n$, where x, y, and z are positive integers. Which of the following could be the total number of zeroes, to the left of the decimal point, contained in n?

I. x + y

II. y – z

III. z
• AIII only
• BI and II only
• CI and III only
• DII and III only
• EI, II, and III

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