GeeksforGeeks

Two women were selling marbles int the market place -- 1 at 3 for a paise and other at 2 for a paise. one day both of them were obliged to return home when each had 30 marbles unsold. they put together the 2 lots of marbles and handling them over to a friend asked her to sell them at 5 for 2 paise.
now they were expecting to get 25 paise for the marbles as they would have got if sold separately but much to their surprise they go only 24 paise in total.
where did the 1 paise go ? c...

On a skating plane, Michel and Jennie are in a distance of a mile on each side of a point. They are going to skate to the direction of each other’s. Jennie, having added force with the flow of the wind, skated two and one-half miles faster than Michel and beat her 6 minutes. What are the times taken by both of them?

You need to check that your friend, Bob, has your correct phone number…

…, but you cannot ask him directly. You must write the question on a card which and give it to Eve who will take the card to Bob and return the answer to you. What must you write on the card, besides the question, to ensure Bob can encode the message so that Eve cannot read your phone number?

Persons A and B. Person A picks a random no. from 1 to 1000.Then person B picks a random no. from 1 to 1000. What is the probability of B getting no. greater then what A has picked.

An even number of coins of different denominations are placed in a row. Two players will take turns to select one coin, which will be taken from one of the two ends, at their turn. They will take turns till all the coins have been collected. The person having more total amount in the end will be the winner. Show that there is a strategy for the first player to always ensure that he will either win or draw (i.e. he will never lose)

device a 10 digit number such that

a] each digit represents the number of zeros following it(eg 9000000000)
b] such that sum of non zero digits in this number is maximum

from my side the answer is 5555500000, please suggest if there is a better
answer

A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son. Now give one coin to the manager and 1/5th of the remaining to second son and so on. After giving coins to 5th son, divided the remaining coins among five daughters equally.
All should get full coins. Find the minimum number of coins he has?

A bunch of men are on an island. A genie comes down and gathers everyone together and places a magical hat on some people’s heads (i.e., at least one person has a hat). The hat is magical: it can be seen by other people, but not by the wearer of the hat himself. To
remove the hat, those (and only those who have a hat) must dunk themselves underwater at exactly midnight. If there are n people and c hats, how long does it take the men to remove the hats? The men cannot tell each other ...

Given n people live in n houses and at some instant all of them disappear and reappear in some other house. What is the probability that no two meet each other.

There is a frog who can make jumps of length 3,5,7. There are stones in a river at distances a1, a2… an. The other end of the stream is n distance away. Can the frog cross the stream. What if the frog can make jumps backwards ?

How many times a day does a clock’s hands overlap?

You have 4218 no of balls. put 1 balls at top layer 3 at 2nd top layer then 6 and then 10 ... Continue in this way. How many layers are possible.?

25 persons are in a room. 15 of them play hockey, 17 of them play football and 10 of them play both hockey and football. Then the number of persons playing neither hockey nor football is:
(A) 2
(B) 17
(C) 13
(D) 3

plzzz provide me the title asap

A man bought two horses for Rs.924 each and sold one horse for 15% profit and the other for 15% loss.What is the net gain?

A man ate 100 bananas, each day eating 6more than the previous day. How many
bananas did he eat on the first day.

If we declare a pointer like char *p;
how much memory is allocated for pointer variable 'p'.