Multiple choice

Find the missing term ‘?’ of the following series. 8, 27, 57, ?, 158, 233

  1. 90

  2. 84

  3. 112

  4. 100

  5. 80

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

Analyze the differences: 27-8=19, 57-27=30. Second differences: 30-19=11. Continue pattern: 11, 11, 14, 14. Next first difference: 30 + 14 = 44. Next term: 57 + 44 = 101. Then: 44 + 14 = 58, 101 + 58 = 159 (close to 158). Then: 58 + 17 = 75, 159 + 75 = 234 (close to 233). Pattern gives 101, but closest option is 100.