General Term Of an AP


 
 
Concept Explanation
 

General Term Of an AP

If the given A.P. is a, ,a+d, ,a+2d, .... then its small n^{th}nth term is given by

small a_{n}=a_{1}+(n-1)d

For example:small n^{th}

The first term of an A.P. is 10 and common difference is 5, then the expression for its general term.

small a_{n}=10+(n-1)5

small a_n=10+5n-5

small a_n=5n+5

Sample Questions
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Question : 1

One of the following statement is true. Identify the statement.

Right Option : B
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Question : 2

Find the general term of an AP -21,-17,-13,.....

 

Right Option : C
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Question : 3

What is the common difference in an AP if

large a_{18}- a_{14} = 32

Right Option : D
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Explanation
 
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