Single Digit Representations of Natural Numbers From 40001 to 50000

There are different ways of representing natural numbers, such as writing in terms of 1 to 9 or 9 to 1, writing in terms of single letter, single digit, flexible power, etc. These types of representations we call as crazy representations. This paper bring numbers 40001 to 50000 in terms of digits 1 to 9 separately. For the representations of the numbers from 1 to 40000 refer author's previous work ((work1, work2, work3, work4, work5, work6