Each of the numbers in the list is called a  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird.

An  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird is a list of numbers in which each term is obtained by adding a fixed number to the preceding term except the first term.

The  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird is called the common difference of the AP.

If there are only a finite number of terms.Such an AP is called a  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird

If there are not finite number of terms.Such an AP is called a  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird AP.

 – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird term an = a + (n – 1) d.

The  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird term a4 = a + 3d.

The  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird term a2 = a + d

The  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird term a3 = a + 2d .

The 10th term of the AP : 2, 7, 12, . . . is  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird.

The sum of  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird integers is given by S= [n(n+1)]/2

The  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird of an AP is a, a + d, a + 2d, a + 3d, . .

11th term from the last term (towards the first term) of the AP : 10, 7, 4, . . ., is  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird

20th term of the AP: 10, 7, 4, . . . , is  – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird.

The sum of the first 22 terms of the AP : 8, 3, –2, . . . is - – 2047-47979arithmetic progressionfinite APfirst n positivefixed numberfourthgeneral forminfinitenthsecondtermthird.



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