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arithmetic progression:see progressionprogression,
in mathematics, sequence of quantities, called terms, in which the relationship between consecutive terms is the same. An arithmetic progression is a sequence in which each term is derived from the preceding one by adding a given number, d,
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arithmetic progression[¦a·rith¦med·ik prə′gresh·ən]
A sequence of numbers for which there is a constant d such that the difference between any two successive terms is equal to d. Also known as arithmetic sequence.
a sequence of numbers or quantities, each term of which differs from the succeeding term by a constant amount, such as 3,6,9,12