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Number Systems : If Z is a positive integer, then the least value of Z for which Z! is divisible by 1,000 is ?

Number Systems : If Z is a positive integer, then the least value of Z for which Z! is divisible by 1,000 is ?

Number System is easily the most important topic on the quant section of several aptitude exams. Not only is the topic vast, but it forms the basis for a lot of other topics and majority of questions in actual exam. 

This topic has a range of subtopics and the questions can vary from being very easy to tough in difficulty level. It is imperative that you solidify this topic from test prep point of you as it does have an impact in your preparation for other topics as well as the final result in a big way.

Solve the following question:

If Z is a positive integer, then the least value of Z for which Z! is divisible by 1,000 is ?

(A) 1

(B) 4

(C) 9

(D) 15

(E) 30

Submit your solutions here.



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