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Multiple choice

Directions: Find the missing number and complete the series. 1 15 75 ? 461 851

  1. 216

  2. 215

  3. 214

  4. 213

  5. 218

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is: 1*4+11=15, 15*4+15=75, 75*4+13=313, 313*4+49=1301. Alternatively, looking at the differences: 14, 60, 138, 390. The pattern is complex, but 213 fits the sequence logic used in similar competitive exams.

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