There are many opportunities to use 'four-digit PIN numbers' in our daily lives, such as credit card PIN numbers, smartphone passcodes, and PC unlock codes. In all cases, we should use four-digit ...

Indian teenager Aaryan Shukla set six world records in mental calculations in a single day, attributing his success to daily practice and Sahaja Yoga meditation. Notable achievements include the ...

On Monday night, the University Registrar announced the updating of Yale Course Search with fall 2025 and spring 2026 course listings. To the surprise of many students, the listings for undergraduate ...

Industrialist Anand Mahindra has said that he was left "dazed and bewildered" by the skills of 14-year-old Aaryan Shukla after he broke the world record for the fastest time to mentally add 100 ...

The column method for addition is a good way to add large numbers. It involves writing one number beneath the other so that the digits for each place value line up. You then add the digits, starting ...

Choosing a phone PIN code that's easy to remember might be a time-saver. It's also a potential security risk. If your phone or another device is lost or stolen, an easily-guessed PIN code makes it ...

Subtracting larger numbers in your head is not always easy, so you can use the column method to take one number away from another. You write the larger number above the smaller number, so that the ...