Here are the matched pairs based on the descriptions provided:
- Ms Word - d) preparing the text document
- Ms Excel - c) dealing with tabular data
- Ms PowerPoint - e) presentation of Ms data and text
- LaTeX - f) typesetting mathematical scientific material at large length
- Mathematica - b) mathematical simulation software
- Beamer - a) presentation LaTeX
So the matches are: 1 - d 2 - c 3 - e 4 - f 5 - b 6 - a