Multiple choice

Choose the correct alternative from the given ones that will complete the series. 120, 120, 124, 142, 190, ?

  1. 200

  2. 290

  3. 300

  4. 280
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Analyze the differences between consecutive terms: 120→120 (0), 120→124 (+4), 124→142 (+18), 142→190 (+48). The second differences are: 4, 14, 30. Third differences: 10, 16. Fourth difference: 6 (constant). Extending this pattern: next third difference = 16+6=22, next second difference = 30+22=52, next difference = 48+52=100, next term = 190+100=290.

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