Question

Find the remainder when 528528528 upto 528 is divided by 27

Answer 1

Answer:

Find the remainder when 528528528...up to 528 digits is divided by 27?

Here's what I have done: The number can be written as 528⋅10525+528⋅10522+...+528 which has 176 terms and each term is ≡15mod27 thus the number should be 176∗15mod27 hence 21 should be the remainder.