There are exactly one thousand boxes, numbered from 1-1000, as well as one thousand persons also numbered from 1-1000. All have to open or close the box as the following instructions Person #1: Go to every box and open it. Person #2: Go to every second box and close it. person #3: Go to every third box. If it is closed, open it, and if it is open, close it. person #4: Go to every fourth box. If it is closed, open it, and if it is open, close it.This goes on until person #1000 is finished. After 1000th person finished his turn. What is the number of opened boxes. - Study24x7
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SAURABH SHARMA
10 May 2021 10:50 AM study24x7 study24x7

There are exactly one thousand boxes, numbered from 1-1000, as well as one thousand persons also numbered from 1-1000. All have to open or close the box as the following instructions

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A

28

B

29

C

30

D

31

E

32

F

33

SSC Banking UPSC
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