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Cube’s Dimensions

Jun 14, 2018, 12:09 AM | by Serhiy Grabarchuk Jr

Eight vertices of a cube are indicated by the eight letters – A through H. Each letter is associated with an adjacent dot, but it is ambiguous which letter goes with which dot due to their respective proximities…

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Man on the Run

May 09, 2018, 10:54 PM | by Serhiy Grabarchuk Jr

Jim ran 10 yards, then made a U-turn and ran 10 more yards. He then turned 180 degrees again and ran 10 more yards. Finally, he made a third U-turn and ran 10 more yards, after which he was 25 yards away from his starting point.

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Pocket Money

Jan 14, 2018, 1:30 AM | by Serhiy Grabarchuk Jr

This morning Sam’s dad decided to test his son’s math progress at school. He put six pieces of clothes in front of Sam, each with a different number of pockets…

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An Odd World?

Dec 06, 2017, 11:58 PM | by Serhiy Grabarchuk Jr

You found yourself exploring a place where the finish precedes the start, where a pride goes after a fall, where creation follows…

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Pizza Time

Nov 16, 2017, 1:34 AM | by Serhiy Grabarchuk Jr

Four friends ordered a large pizza cut into eight slices. The friends ate the entire pizza, each of them eating a different number of slices.

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Tic-Tac-Toe: O2X

Nov 08, 2017, 2:47 PM | by Serhiy Grabarchuk Jr

A middle of a tic-tac-toe game. It is known the game eventually ended with a win. Assuming that both players are equally skilled and do not miss any chances to…