A new brainteaser has left people stumped as it challenges you to work out what the next number in a sequence should be, but ...

Two mathematicians have proved that a straightforward question — how hard is it to untie a knot? — has a complicated answer.

This is a preview. Log in through your library . Abstract The patterns and sequences of molt in the Great Basin pocket mouse, Perognathus parvus olivaceus Merriam, are described on the basis of 56 ...

It's an important concept when we talk about angel numbers: sequences of repeating numbers that contain repetition (e.g. 111) ...