top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

There are 100 lights numbered 1 to 100, all starting in the off position. There are also 100 people numbered............

0 votes
17 views

There are 100 lights numbered 1 to 100, all starting in the off position. There are also 100 people numbered 1 to 100. First, person 1 toggles every light switch (toggle means to change from off to on, or change from on to off). Then person 2 toggles every 2nd light switch, and so on, where person i toggles every ith light switch. The last person is person 100 who toggles every 100th switch.

After all 100 people have passed, which light bulbs will be turned on?

posted 1 day ago by Rahul Chandel

Looking for solution? Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button




Similar Puzzles
0 votes
A farmer has 16 cows. They are numbered also 1 to 16. Each number also represents No of litres that cow................

A farmer has 16 cows.
They are numbered also 1 to 16.
Each number also represents No of litres that cow gives.
For eg 10 no cow gives 10 litres.
The Farmer has four sons.
He wants to distribute equal no of cows and equal no of litres to each son.
Can you help him?

0 votes
There is a school shooting, to keep the kids safe the teachers gather the kids in the corner and turned off the lights..

There is a school shooting, to keep the kids safe the teachers gather the kids in the corner and turned off the lights. What did the teacher forget to do?

0 votes
There are 5 homes in a row numbered 1 to 5. Each house is painted a different color and has individuals of different....

There are 5 homes in a row numbered 1 to 5. Each house is painted a different color and has individuals of different countries, each owning different pets, drinking different beverages, and enjoying different brands of candy.

  1. The Englishman lives in the red house.

  2. The Spaniard owns the dog.

  3. Coffee is drunk in the green house.

  4. The Ukrainian drinks tea.

  5. The green house is numbered one more than the ivory house.

  6. The person who eats M&Ms owns snails.

  7. Kit Kats are eaten in the yellow house.

  8. Milk is drunk in home 3.

  9. The Norwegian lives in home 1.

  10. The man who eats Cadbury’s lives in the house next to the man with the fox.

  11. Kit Kats are eaten in the house next to the house where the horse is kept.

  12. The Snickers eater also drinks orange juice.

  13. The Japanese enjoys Reese’s candy.

  14. The Norwegian lives next to the blue house.

Now, who drinks water? And who owns the zebra?

0 votes
Two dice A and B are each numbered 1 to 6. But each dice is unfair: the numbers 1 to 6 do not all show with...........

Two dice A and B are each numbered 1 to 6. But each dice is unfair: the numbers 1 to 6 do not all show with equal chance. If you roll the two dice, their sum will be a whole number from 2 to 12. Prove it is impossible that all of the sums can occur with equal chance.

...