Which of the following is a prime number?

Multiple choice — select the best answer

A50
B6
C23
D25

✓ Correct answer: C. 23 23 is a prime number. A prime number is a number that can only be divided by itself and by the number 1, without a remainder. 50, 25, and 6 can all be divided by numbers other than itself and 1. Even numbers greater than 2 are never prime.

.q-expl{display:block!important}.q-opt[data-idx="2"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="2"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free GACE PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

Which of the following is a prime number?

Related questions

Free practice here. Timed mocks when you are ready.