In microsoft word or any other word processor I want to generate list which goes like

http://sampleanythingwebsitexyzabc/e349338fc5c67c4855c4a1/jpg/page_6.jpg



http://sampleanythingwebsitexyzabc/e349338fc5c67c4855c4a1/jpg/page_98.jpg

http://sampleanythingwebsitexyzabc/e349338fc5c67c4855c4a1/jpg/page_101.jpg
.............................

http://sampleanythingwebsitexyzabc/e349338fc5c67c4855c4a1/jpg/page_500.jpg

..........



so on and so forth.

Since you did not make your pictures links, I did not look.
The best tutorial out there on customized numbering is How to create numbered headings or outline numbering in Ribbon Versions of Word by Shauna Kelly.

For background, you may also want to look at Numbering in Microsoft Word and the many links found therein.

aaaaah!!! The links were not meant to be opened. It's just a sample of the list I wanna generate. at the end, instead of jpg there can be pdf, dwg, doc, blah, anything.

If I wanted a list built up of {prefix}{incrementingSequence}{suffix}, I might do it like this – write a sample line once in Word, replace {incrementingSequence} with a SEQ field, copy/paste as required and update the fields

If gaps in the sequence are significant, delete the lines I don't want. No guarantee this solution scores high on elegance, of course, and there may be finesses in your requirements I haven't guessed at.