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There are 100 doors all are closed. The below action is
taken
1) all are opened
2)all multiple of 2's are togelled ie if
open close or viceversa
.....100 times.
What is the status of the door after 100th.

Answers were Sorted based on User's Feedback



There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / jaymitpatel

after 100 th the door is open

Is This Answer Correct ?    11 Yes 2 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / akash srivastava

the series 1,4,9,16,25,36,49,64,81,100 doors will be open
rest of all will be close.....bcOZ:this is a series of
progressive odds difference i.e. 4-1 = 3, 9-4 = 5, 16-9 = 7
and sO on....hence they must have odds number of multiples
which them odd times toggle sOo open...!!! rest of ol
numbers hv even multiples so close...!!!

Is This Answer Correct ?    3 Yes 1 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / praveenkumar

open

Is This Answer Correct ?    0 Yes 0 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / contactsurajhegde

closed

Is This Answer Correct ?    0 Yes 0 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / manoj

after hundred the door is closed

Is This Answer Correct ?    0 Yes 0 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / thirumal rao

either closed are opened depending on first multiple of 2's door

Is This Answer Correct ?    0 Yes 0 No

There are 100 doors all are closed. The below action is taken 1) all are opened 2)all multiple o..

Answer / amal

after 100th all doors are open...

Is This Answer Correct ?    0 Yes 0 No

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