Earlier today (whilst attending his birthday party) I asked Andy his age, but he said that I can figure that out easily by myself! All I had to do was to add four numbers together.

The first of these four numbers is the last digit in the figure obtained when 2 is raised to the power of 667788 (2^{667788}). Similarly, I had to find the last digit in the evaluation of 3^{556677}, 7^{445566}, and 8^{334455} to complete the sum.

If today is the 12^{th} of March 2020, when was Andy born?

## Question

## rocdocmac

Earlier today (whilst attending his birthday party) I asked Andy his age, but he said that I can figure that out easily by myself! All I had to do was to add four numbers together.

The first of these four numbers is the last digit in the figure obtained when 2 is raised to the power of 667788 (2

^{667788}). Similarly, I had to find the last digit in the evaluation of 3^{556677}, 7^{445566}, and 8^{334455}to complete the sum.If today is the 12

^{th}of March 2020, when was Andy born?Edited by rocdocmacWording change

## Link to comment

## Share on other sites

## 6 answers to this question

## Recommended Posts

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.