Multiple choice

Directions: In each of the following numbers, one number is incorrect. Find out the odd number.

  1. 3

  2. 13

  3. 23

  4. 33
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The numbers 3, 13, and 23 are all prime numbers (divisible only by 1 and themselves). However, 33 = 3 × 11 is a composite number, making it the odd one out in this sequence.

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