Multiple choice

13 12 16 7 23 ?

  1. 1

  2. 0

  3. -1

  4. -2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is -1, +4, -9, +16, -25. Specifically: 13-1=12, 12+4=16, 16-9=7, 7+16=23, 23-25=-2.

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