If \(945 \cdot s\) is a perfect square then \(s\) can be which of the following numbers?

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If \(945 \cdot s\) is a perfect square then \(s\) can be which of the following numbers?

A. 21
B. 35
C. 54
D. 105
E. 150

OA D

Source: Beat The GMAT — Problem Solving | Fri Jul 17, 2020 4:03 am

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