Today is a day of sevens: 07/07/07. Seven is considered lucky by many people. There are seven days of the week, seven continents and seven brides for seven brothers. But is it magical in the world of ...

Is lucky number 7 your favorite digit? Here's why you're not the only one. If you ask anyone to choose a number between one and ten, many times that person will choose lucky number 7. But why? Is it ...

Researcher in International Development and Education, and Head of PGCE Maths teacher training for Primary and Secondary Education, Newcastle University A number which can only be divided by itself ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Gizmodo may earn an affiliate commission. Reading time 5 minutes Of ...

Randomly scramble the digits 0, 1, 2, 3, 4, 5 and 6 to form a seven-digit number (or a six-digit number if the leading digit is 0). Rank the following events in order ...