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Formulas of Sequence and Series
- The
 term  of the Arithmetic Progression (A.P)  is given by  .
- Arithmetic mean between
 and  is given by  .
- If
 denotes the sum up to  terms of A.P.  then  where  stands for last term, 
- The sum of
 A.M’s between  and  is  .
- The
 term  of the geometric progression  is  .
- Geometric mean between
 and  is  .
- If
 denotes the sum up to  terms of G.P is  ,  where 
- The sum
 of infinite geometric series is 
- The
 term  of the geometric progression is  .
- Harmonic mean between
 and  is  .
 and  ; where  are usual notations. |
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