Latest self Aptitude Question SOLUTION: There are 100 lockers in a row that are all closed at the beginning. There are 100 students. Each student makes a pass. The first student opens the every locker door. The second st

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10,12,15,20,27,?

1)35
2)36
3)37
4)38
5)39

(#M40000381) SELF question mind game Keep an EYE

There are 100 lockers in a row that are all closed at the beginning. There are 100 students. Each student makes a pass. The first student opens the every locker door. The second student toggles (if the door is closed, you open it, if its open, you close it) every 2nd locker door (#2, #4, #6 etc) starting with locker #2. The third student toggles every 3rd locker door starting with locker #3. The nth student toggles every nth locker door starting with nth locker.
Which lockers will be open at the end?

YadeeshKumar (13 years ago)

Solved Vadivelan M Read Solution (5)

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Vadivelan M  (13 years ago)

Lockers #1, #4, #9, #16, #25, #36, #49, #64, #81 & #100 will be open at the end.

Is this solution Helpfull? Yes (2) | No (1)  

C.T.Narayanan  (13 years ago)

1,4,9,16,25,36,49,64,81,100 are the lockers which will be open @ the end ....

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Dr.Dipin Singh  (13 years ago)

10. All perfect squared numbered lockers 1,4,9,16,25,36,49,64,81,100

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C.T.Narayanan  (13 years ago)

1,4,9,16,25,36,49,64,81,100

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sanjaykumar  (13 years ago)

only first door will be opened at the end

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10,12,15,20,27,?

1)35
2)36
3)37
4)38
5)39