There is a school with 100 students and correspondingly 100 lockers, all of which start off closed. The first student opens every locker and the second students closes every other locker starting with the second (2,4,6...etc..) . The 3rd student changes the state of the lockers numbered (3,6,9.. etc.). The fourth student changes the state of the lockers numbered (4,8,12.. etc..).. This continues until all the 100 students passes along the lockers.. when all the 100 student is done which locker is closed and which locker is in open condition?
Answer Posted / serverx
locker 1
| Is This Answer Correct ? | 28 Yes | 17 No |
Post New Answer View All Answers
Each side of a rectangle is increased by 100% .By what percentage does the area increase?
On BRIC So called New york has risen by on average sales plese chewk the incorrect sentence option 1. so called 2. Has risen 3. By on average
There is a rectangular terrace whose length and width are 60m X 20m. There is a walkway of uniform width around terrace. Area of walkway is 516m^2. Find width of walkway:
If A=Z, B=Y, C=X, .......... Z=A, Then GROUP = ?
In which of the system, decimal number 194 is equal to 1234?
Successive discounts of 10%, 20% and 20% are equal to a single discount of __
.Both A and B Alice and Bob play the following chip-off-the-table game. Given a pile of 58 chips, Alice first picks at least one chip but not all the chips. In subsequent turns, a player picks at least one chip but no more than the number picked on the previous turn by the opponent. The player to pick the last chip wins. Which of the following is true?
Conversation between two mathematicians: first : I have three children. The product of their ages is 36 .. If you sum their ages . it is exactly same as my neighbour's door number on my left. The second mathematician verifies the door number and says that the not sufficient . Then the first says " o.k one more clue is that my youngest is the youngest" Immediately the second mathematician answers . Can you answer the question asked by the first mathematician? What are the children ages?
A man walks east and turns right and then from there to his left and then 45degrees to his right.In which direction did he go ?
Age of Grandfather is the ages of 4 grandchildren where their ages are in consecutive.Find the age of Grandfather.
in a market 4 man are standing .the average age of the four before 4 years is 45, after some days one man is added and his age is 49. What is the average age of all?
If A, B and C are the mechanisms used separately to reduce the wastage of fuel by 30%, 20% and 10%. What will be the fuel economy if they were used combined.
A moves 3 kms east from his starting point . He then travels 5 kms north. From that point he moves 8 kms east.How far is A from his starting point?
1. Questions on probability 2. Questions on statistics (mainly growth rates, market shares, etc.) 3. Questions on general logics 4. Evaluate strengths and weekness of proposed product All questions are open test
One clock ringes 7 O'clock in 7 sec.In how many seconds it will ring 10 O'clock.