Question : Directions: In the given figure, how many keys are duplicates but not steel?
Option 1: 16
Option 2: 18
Option 3: 0
Option 4: 34
Correct Answer: 0
Solution :
According to the question, there is no common region that represents keys that are duplicate but not steel is the region common to both keys and duplicate, but uncommon to the steel region.
From the Venn diagram, such a region does not exist.
Therefore, the number of keys that are duplicate but not steel is 0. Hence, the third option is correct.
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