GeeksforGeeks

You’ve got someone working for you for seven days and a gold bar to pay them. You must pay the worker for their work at the end of every day. If you are only allowed to make two breaks in the gold bar, how do you pay your worker? (Assuming equal amount of work is done during each day thus requiring equal amount of pay for each day)....

Let a natural number N be such that N = a × b where a and b are the factors of N. How many such sets of (a, b) can be formed in which the selection of the two numbers a and b is distinctly different if N = 24 × 33?

A machine gives out five pennies for each nickel inserted into it. The machine also gives out five nickels for each penny. Can Peter, who starts out with one penny, use the machine in such a way as to end up with an equal number of nickels and pennies?

Assume X age is K years now. X is twice as old as Y was when X was as old as Y is now. Find the ratio of ages X and Y?

can u write 120 using five zero's(0) only ?

There are 25 horses among which you need to find out the fastest 3 horses. You can conduct race among at most 5 to find out their relative speed. At no point you can find out the actual speed of the horse in a race. Find out how many races are required to get the top 3 horses.

The best i could think of was 7 races. Is there a more optimal way?

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 room contains a group of people . One of them is a celebrity.Celebrity doesn’t know any one in the room.All the non celebrities know celebrity. Some non celebrities may know some other non celebrities but the converse is may or may not be true. Every person in the room knows himself. How do you find the celebrity.

you have given a 3D cube. how many possible paths from one point to another point in Cube.

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)

can it be possible to sort 6 numbers with help of 9 comparison using comparision sorts only?
like numbers are 6 3 2 5 4 1 or in any order?

three points are randomly chosen on a circle.what the probability that
1.triangle formed is right angled triangle.
2.triangle formed is acute angled triangle.
3.triangle formed is obtuse angled triangle.

In one small town, there is a liar who lies on six days of the week. But on the seventh day he always tells the truth. He made the following statements on three successive days:

Day 1: 'I lie on Monday and Tuesday.'
Day 2: 'Today, it's Thursday, Saturday, or Sunday.'
Day 3: 'I lie on Wednesday and Friday.'

What day does the guy tell the truth?

You have 5 jars of pills. Each pill weighs 10 grams, except for contaminated pills contained in one jar, where each pill weighs 9 grams. Given a scale, how could you tell which jar had the contaminated pills in just one measurement?

A man has two cubes on his desk. Every day he arranges both cubes so that the front faces show the current day of the month. What numbers are on the faces of the cubes to allow this?

Alok and Bhanu play the following min-max game. Given the
expression,

N = 12 + X*(Y - Z)

where X, Y and Z are variables representing single digits (0 to 9),
Alok would like to
maximize N while Bhanu would like to minimize it. Towards this end,
Alok chooses
a single digit number and Bhanu substitutes this for a variable of her
choice (X, Y or
Z). Alok then chooses the next value and Bhanu, the variable to
substitute the value.
...

A man has a medical condition that requires him to take two kinds of pills, call them A and B. The man must take exactly one A pill and exactly one B pill each day, or he will die. The pills are taken by first dissolving them in water.

The man has a jar of A pills and a jar of B pills. One day, as he is about to take his pills, he takes out one A pill from the A jar and puts it in a glass of water. Then he accidentally takes out two B pills from the B jar and puts them in the water...