With first week's saving Tk. $10$ as first term and common difference Tk. $10$, the sum of the first $8$ terms is (Tk.)

Question

With first week's saving Tk. $10$ as first term and common difference Tk. $10$, the sum of the first $8$ terms is (Tk.) —

Accepted Answer

$360$

Answer

$400$

Answer

$440$

Answer

$480$

With first week's saving Tk. 101010 as first term and common difference Tk. 101010, the sum of the first 888 terms is (Tk.) —