Multiple choice

Directions: Find the wrong number in the following number series. 412, 423, 444, 489, 577, 753, 1105

  1. 577

  2. 444

  3. 412

  4. 423

  5. 1105
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Differences: 423-412=11, 444-423=21, 489-444=45, 577-489=88, 753-577=176, 1105-753=352. The pattern of differences is 11, 22, 44, 88, 176, 352. The second difference should be 22, so 423+22=445. 444 is the wrong number.

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