Multiple choice

In the following number series, find the missing term? $215 \quad 1071 \quad 4281 \quad 12841 \quad ?$

  1. 36540

  2. 25681

  3. 32841

  4. 25481

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is x5-4, x4-3, x3-2, x2-1. Starting with 215: 215x5-4 = 1071, 1071x4-3 = 4281, 4281x3-2 = 12841, 12841x2-1 = 25681.

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