Track / Stage 1 / 31 of 320 #31 of 2604

How many numbers in the list $11, 12, 13, 14, 15, 16, 17$ are prime numbers?

(A) $0$ (B) $1$ (C) $2$ (D) $3$ (E) $4$

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.