Question

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series. 3,4,7,7,13,13,21,22,31,34,?

• A. 42
• B. 43
• C. 51
• D. 52

Hint:

In number series: • Try separating into odd and even position terms • Look for arithmetic patterns in differences

Answer 1

The Correct Option is B

Step 1: Split the series into two alternating sub-series. Odd-position terms: 3,7,13,21,31 Differences: +4, +6, +8, +10 Even-position terms: 4,7,13,22,34 Differences: +3, +6, +9, +12
Step 2: The next even-position term will increase by +15: 34 + 9 = 43