Multiple choice general knowledge

1,-4,9,-16,_

  1. -27

  2. -25

  3. -26

  4. 25
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sequence is alternating sign squares: 1², -2², 3², -4², 5². The sign alternates positive/negative while the base increments by 1. Next is +5²=25.

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