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Basic Mathematics QUESTION #4496
Question 1
Which of the following is a prime number?
  • $21$
  • $27$
  • $29$✔️
  • $33$
Correct Answer Explanation
$29$ has only two factors: $1$ and $29$. Others: $21 = 3 \times 7$, $27 = 3^3$, $33 = 3 \times 11$