Coin Rolls
Every night, I dump all the change in my pocket into a big bucket. When I buy things, I never […]
Algorithms, Logic Puzzles, Math Problems
Coding Interview Questions
Calendar Cubes
A man has two cubes on his desk. every day he arranges both cubes so that the front faces show
Coding Interview Questions
Boys and Girls
In a country in which people only want boys, every family continues to have children until they have a boy.
Brain Teasers, Logic Puzzles
Painfully Easy
I flip a penny and a dime and hide the result from you. “one of the coins came up heads”,
Coding Interview Questions
Nuggets
You can go to a fast food restaurant to buy chicken nuggets in 6-pack, 9-pack or 20-packs. is there such
Coding Interview Questions
Orbs
You have two identical crystal orbs. you need to figure out how high an orb can fall from a 100
Arrays
World Series
You have $10,000 dollars to place a double-or-nothing bet on the Yankees in the World Series (max 7 games, series
Math Problems, Recursion
100 Factorial
how many trailing zeroes are there in 100! (100 factorial)? Solution One per factor of 10, and one per factor
Math Problems, System Design
Oil Mogul
You are an oil mogul considering the purchase of drilling rights to an as yet unexplored tract of land. The
Bit Manipulation
Vienna
It’s the middle ages, you’re travelling across europe and you want to find the way to vienna. you come to
Math Problems
Duel
You find yourself in a duel with two other gunmen. you shoot with 33% accuracy, and the other two shoot
Arrays
Box ‘o Numbers
Arrange the numbers 1 to 8 in the grid below such that adjacent numbers are not in adjacent boxes (horizontally,
Brain Teasers, Logic Puzzles
Coin Problem
some of you may have easily solved the pill weighing problem posed here. If so, you are going to love