List

Logs by the fire - related

Log Attack
problem

Log attack

Age
16 to 18
Challenge level
filled star empty star empty star
Solve these equations.
Climbing Powers
problem

Climbing powers

Age
16 to 18
Challenge level
filled star filled star empty star

$2\wedge 3\wedge 4$ could be $(2^3)^4$ or $2^{(3^4)}$. Does it make any difference? For both definitions, which is bigger: $r\wedge r\wedge r\wedge r\dots$ where the powers of $r$ go on for ever, or $(r^r)^r$, where $r$ is $\sqrt{2}$?

Big, Bigger, Biggest
problem

Big, bigger, biggest

Age
16 to 18
Challenge level
filled star empty star empty star

Which is the biggest and which the smallest of $2000^{2002}, 2001^{2001} \text{and } 2002^{2000}$?