Track / Stage 2 / 15 of 320 #335 of 2604

If $a^2 + 3b = 33$, where $a$ and $b$ are positive integers, what is the value of $ab$?

(A) $11$ (B) $24$ (C) $16$ (D) $32$ (E) $27$

The source for this one didn't record the answer, so there is nothing to check what you type against. Work it on paper and mark yourself against the solution below.

I solved it I didn't Skip

Next problem →

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project. Solutions are the publisher's, linked not copied.