Foundation June 2017 Paper 1 Q3

OCRFoundationCurrent spec4 marksProperties of Numbers

3 Here is a list of numbers.

\[11 \qquad 27 \qquad 81 \qquad 21 \qquad 41 \qquad 42 \qquad 23 \qquad 39 \qquad 45\]

From this list, write down

(a) the even number, [1]
(b) the square number, [1]
(c) all the prime numbers. [2]