The highest-ranking business person on the list is Walmart CEO Michael Duke, at No. 10. Facebook CEO Mark Zuckerberg, 29, in 24th position, is the youngest on the list.
Four factors were taken into account in ranking the people of power, the magazine said: how many people over whom they have power, the financial resources they control, if their influence extends to more than one sphere and how actively they wield their power to change the world.
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