If the first term of an $A.P.$ is $3$ and the sum of its first $25$ terms is equal to the sum of its next $15$ terms, then the common difference of this $A.P.$ is :
If the first term of an $A.P.$ is $3$ and the sum of its first $25$ terms is equal to the sum of its next $15$ terms, then the common difference of this $A.P.$ is :
- [JEE MAIN 2020]
- A
$\frac{1}{4}$
- B
$\frac{1}{5}$
- C
$\frac{1}{7}$
- D
$\frac{1}{6}$
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