Norway Math Olympiad Problem

[@hgjfkd12345]

If a is an element of Z+, how can the answer not be an integer?

[@thomasr2472]

Also, ℤ+ is usually referred to as ℕ.

[@benjaminwood8736]

@@thomasr2472they are different, the natural numbers include 0, while the positive integers don’t

[@Demigod2Tet8]

@@benjaminwood8736 there's no agreement on whether or not 0 is a natural number

[@MaMo7x-is-me]

@@benjaminwood8736 I think it's quite the opposite.

[@MaMo7x-is-me]

How's the answer valid? if log2(3) = 1.58496250072.... which is irrational let alone an integer.

[@MrHailstorm00]

should probably first learn how to spell, Z looks nothing like R

[@riotangel]

why divide by u-3 ?

[@alexlangdon8736]

Is this not very easy to be a in a math olympiad

[@tirlas]

Was the question not copied correctly?
If a ∈ ℤ, a > 0, then there is no answer.
If a ∈ ℝ, a > 0, then your answer is valid.