A network of 20 x 10 squares is given to you. Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?
What is next number in the pattern below: 131 517 192 123 ?
Below, you can see some coding: January = 1017 February = 628 March = 1335 April = 145 May = 1353 June = 1064 July = 1074 August = 186 Now deciphering the way it has been coded, can you find out how September will be coded?
What has to be broken before you can use it?
In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?
What has 13 hearts but no other organs?
How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?
Before reading ahead, you must know the fact that only one of the people here is telling the truth. A says that B is lying. B says that C is lying. C says both A and B are lying. Can you find out who is speaking the truth?
Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error? x = 9.999999... 10x = 99.999999... 10x - x = 90 9x = 90 x = 10
How could a baby fall out of a twenty-story building onto the ground and live?
What can you catch but never throw?
The inventor of the Rubik’s Cube didn’t realize he’d built a puzzle until he scrambled it the first time and tried to restore it.
