Question

sum of series s= 888888+88888+8888+888+88+8 programs​

Answer 1

Use calculator for this answer

Answer 2

Explanation:

The easiest thing you can do is use a calculator, however the problem arises when the count of 8’s in series start exceeding the range of your calculator.

So another easy way is convert this series to a GP, take 8 common, multiply and divide the series by 9, write every term in the form (10^n-1) to get this,

(8/9)(10^1 –1 + 10^2 –1 + 10^3 –1 + ……. + 10^n -1)

Separate all -1’s and apply simple GP sum formula to get the answer