Multiple choice

Find out the missing number in the following number series? निम्नलिखित संख्या-श्रृंखला में प्रश्नचिन्ह (?) के स्थान पर क्या मान आयेगा ? 28 39 63 102 158 (?)

  1. 232

  2. 242

  3. 233

  4. 244

  5. None of these इनमें से कोई नहीं

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

Analyze the differences between consecutive terms: 39-28=11, 63-39=24, 102-63=39, 158-102=56. Now look at differences of these differences: 24-11=13, 39-24=15, 56-39=17. The second differences increase by 2 each time (13, 15, 17). The next second difference should be 19, so the next first difference is 56+19=75. Therefore the next term is 158+75=233, which matches option C.