Past exam of the mathematics course of the University of Cambridge / 2024 / ia / Paper 4 / 5E / ii

Table of contents
- Solution ii

Solution

Divisibility by

2

or

5

depends only on the final digit. As the digits are cyclically rotated, every digit appears in the final position. Thus every rotation is divisible by

d \in {2, 5}

exactly when every digit is divisible by

d

.

 Ancestors (10)

 View article source

 Discussion (0)

There are no discussions about this article yet.

 Articles by others on the same topic (0)

There are currently no matching articles.

  See all articles in the same topic Create my own version