How many terms are there in the A.P. 7,10,13,…43?

Explanation

Given A.P:

`7,10,13......43`

first term `(a)=7`

common difference (d)=`a_ 2` −`a_1`

`=10−7`

`d=3`

n th term of A.P is given by

`a_ n`​ `=a+(n−1)d`
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