Question

Look at this series: 8, 43, 11, 41, _ _ , 39, 17, _ _ What number should fill in the blank?

• A. 13
• B. 15
• C. 14
• D. 16
• E. 40

Hint:

To identify alternating series, look for a "sawtooth" pattern where numbers increase then decrease repeatedly.

Answer 1

The Correct Option is C

Step 1: Analyse options.
- This is an alternating series. - Series 1: $8, 11, \_\_, 17$ (Increases by 3: $8+3=11, 11+3=14, 14+3=17$). - Series 2: $43, 41, 39$ (Decreases by 2). - The blank belongs to the first series.
Step 2: Conclusion.
$11 + 3 = 14$. Final Answer: (c) 14