Student ID number at a certain University are made up of a letter, followed by six 1-digit numbers, and then another letter (example: L 1323 89M). How many student ID numbers are possible if the letters cannot be repeated?

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year the population of her town is changing by a constant rate

This is different from the first one can someone me