Multiple choice

Directions: In the following number series, one of the numbers is wrong in the sense that it does not belong to the series. Find that number. 3, 5, 12, 38, 154, 914, 4634

  1. 12

  2. 38

  3. 154

  4. 914
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Series: 3, 5, 12, 38, 154, 914, 4634. Pattern: *1+2=5, *2+2=12, *3+2=38, *4+2=154, *5+2=772 (not 914), *6+2=4634. 914 is the incorrect term.

AI explanation

The series follows the logic of multiplying by a sequential integer and then subtracting the next sequential integer. Starting with 3, we calculate (3 x 1) + 2 = 5, then (5 x 2) + 2 = 12, then (12 x 3) + 2 = 38, and (38 x 4) + 2 = 154. Following this same method, (154 x 5) + 2 equals 772, and applying the rule to 772 gives (772 x 6) + 2 = 4634. Therefore, 914 is the wrong number.

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