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Vedic mathematics is a system of mathematics consisting of a list of 16 basic sūtras, or aphorisms. They were presented by a Hindu scholar and mathematician, Bharati Krishna Tirthaji Maharaja, during the early part of the 20th century.Tirthaji claimed that he found the sūtras after years of studying the Vedas, a set of sacred ancient Hindu texts.However, Vedas do not contain any of the "Vedic mathematics" sutras.The calculation strategies provided by Vedic mathematics are said to be creative and useful, and can be applied in a number of ways to calculation methods in arithmetic and algebra, most notably within the education system. Some of its methods share similarities with the Trachtenberg system.

A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention and/or by law, that is used as a standard for measurement of the same physical quantity.Any other value of the physical quantity can be expressed as a simple multiple of the unit of measurement.For example, length is a physical quantity. The metre is a unit of length that represents a definite predetermined length. When we say 10 metres (or 10 m), we actually mean 10 times the definite predetermined length called "metre".The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. Different systems of units used to be very common. Now there is a global standard, the International System of Units (SI), the modern form of the metric system.In trade, weights and measures is often a subject of governmental regulation, to ensure fairness and transparency. The Bureau international des poids et mesures (BIPM) is tasked with ensuring worldwide uniformity of measurements and their traceability to the International System of Units (SI). Metrology is the science for developing nationally and internationally accepted units of weights and measures.

Patterns in numbers

Patterns in graphs

Patterns in shapes

Patterns in infinite sequences

Patterns in infinite series

Patterns in nature

Patterns in algebra

Patterns in daily life

Patterns in integrals

Patterns in derivatives

Patterns in games & puzzles

Patterns in matrices