Question

Look carefully for the pattern, and then choose which pair of numbers comes next.
13 29 15 26 17 23 19 _ _ _ _

• A. 21 23
• B. 20 21
• C. 20 17
• D. 25 27
• E. 22 20

Hint:

When numbers in a series jump up and down, try looking at every second number to see if two separate patterns are interleaved.

Answer 1

The Correct Option is B

Step 1: Analyse options.
- This is an alternating series. - The first series starts at 13 and increases by 2: $13, 15, 17, 19, (21)$. - The second series starts at 29 and decreases by 3: $29, 26, 23, (20)$. - The sequence asks for the next two numbers: the next in the "minus 3" series (20) and the next in the "plus 2" series (21).
Step 2: Conclusion.
The next two numbers are 20 and 21. Final Answer: (b) 20 21