medium · GMAT Quant
An inventory of 36 items is indexed 1 to 36. An item is "Damaged" if its index is prime and "Obsolete" if its index is a perfect square.
How many items in the inventory are neither Damaged nor Obsolete?
An inventory of 36 items is indexed 1 to 36. An item is "Damaged" if its index is prime and "Obsolete" if its index is a perfect square. How many items in the inventory are neither Damaged nor Obsolete?
- 19
- 20
- 21
- 25
- 15
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