#### Problem Statement: EE Board March 1998

In a commercial survey involving 1000 persons on brand preference, 120 were found to prefer brand x only, 200 prefer brand y only, 150 prefer brand z only, 370 prefer either brand x or y but not z, 450 prefer brand y or z but not x and 370 prefer either brand z or x but not y. How many persons have no brand preference, satisfied with any of the three brands?

#### Problem Answer:

There are **280 persons** who have no brand preference, satisfied with any of the three brands.

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