hello Guest!
Login | Register

How many bulbs are On | talks

in Puzzles > Others > Logical Puzzles

Logical Puzzles



more in Logical Puzzles

Recently Viewed

Three Bulbs and You
(10 secs ago)
4 units of water
(23 hours ago)
Eye Color
(2 days ago)
Work and Gold
(4 days ago)

Recently Added

Work and Gold
(3 years ago)
4 units of water
(3 years ago)
Drop from the floor
(3 years ago)
Eye Color
(3 years ago)
How many bulbs are On
started by kb0000 on 2014-06-01 13:06:53 | in Talks under
There are 100 bulbs arranged in a row. Each bulb has its own switch and is currently turned off. In the first round, you turn every switch on. In the second round, you flip the switch of every second bulb (i.e. bulb 2, 4, 6, 8 and so on). In the third round, you flip the switch of every third bulb and so on. What is the state of bulb 9 after 100 rounds? Also, how many bulbs are on after 100 rounds?

talk back

Login required to access this feature.
No replies to display
This is advert slot. Where advertisers can create and show ads on angineer.com

Ads can be text, link, image, flash, popup based on Slot Zone on portal and its services.

Create Ad to link to your product, company, job, institute, classified within Portal or point it to an outside Webpany.

classifieds