id: 06419946
dt: j
an: 2015b.00011
au: Krech, Ireneusz
ti: On rotations of geometrical.
so: Obz. mat. fyz. inform. 43, No. 3, 21-24 (2014).
py: 2014
pu: PROTONIT s.r.o., Nitrianske Hrnčiarovce
la: EN
cc: A20 A80
ut: mathematical problems; puzzles; circles
ci: Zbl 0925.00013
li: 
ab: Summary: The paper presents some original solutions to a certain problem on
    rolling coins (circles) derived from a book by {\it D. G. Wells} [The
    Penguin book of curious and interesting puzzles. New York, NY: Penguin
    Books (1992; Zbl 0925.00013)], and also proposes several
    generalizations of the problem.
rv: