I was spending the weekend at Woodful Towers when a wealthy old Sir Joshua Woodful was horribly murdered in the library.
Transformations is a collective name for several different methods in Geometry.
Suppose we enter a number, $abc$, say, in a calculator and then repeat it to get $abcabc$. Now divide by $13,11$ and $7$. The calculator will always display the original number $abc$; why?
Q.527 On a sheet of paper we read the following 100 statements: