perplexus.info :: Numbers : Factorials

Factorials (Posted on 2024-05-29)

What decimal digit occurs most often in the sequence of factorials from 77777! to 77877! inclusive?

This can be solved by logic. You do not need to compute any factorials.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

The required decimal digit is zero.
For an explanation, refer to:
The solution submitted by Charlie in this location.
The solution submitted by Larry in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	Larry	2024-05-29 11:18:21
solution (spoiler)	Charlie	2024-05-29 10:38:59

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