Identifying by the First Digit Simply noting the first digit of the credit card account number can help you narrow down or identify the issuer.

The bank routing number is easy to identify, once you know what you're looking for. Learn more about this critical nine-digit number.

A routing transit number (RTN) is a unique nine-digit numerical code used to identify a physical bank, digital bank, or other financial institution.

Standard Industrial Classification codes are four-digit numerical codes that categorize companies by their primary business activity.

Maths Tricks for Competitive Exams can help solve questions faster. Check 30 easy and smart shortcuts to boost Quantitative Aptitude for SSC, RRB, and Banking exams.

Ada Lovelace, daughter of the famous poet Lord Byron, is considered the world's first computer programmer.