Math Problem Statement

7,14,8,16,10,12,?

Solution

To find the pattern in the sequence 7,14,8,16,10,12,?7, 14, 8, 16, 10, 12, ?, we can analyze the differences and possible relationships between consecutive terms.

  1. Identify the pattern:

    • Consider separating the sequence into two interleaved subsequences:
      • Odd-positioned terms: 7,8,10,?7, 8, 10, ?
      • Even-positioned terms: 14,16,1214, 16, 12
  2. Analyze the odd-positioned terms: 7,8,10,?7, 8, 10, ?

    • From 7 to 8, we add 1: 7+1=87 + 1 = 8
    • From 8 to 10, we add 2: 8+2=108 + 2 = 10
    • If the pattern continues by adding 1 more each time, the next number should be 10+3=1310 + 3 = 13.
  3. Analyze the even-positioned terms: 14,16,1214, 16, 12

    • From 14 to 16, we add 2: 14+2=1614 + 2 = 16
    • From 16 to 12, we subtract 4: 164=1216 - 4 = 12
    • This suggests a pattern alternating between adding and subtracting: +2,4+2, -4.
    • If we follow this alternating pattern, the next step would be to add 6 (to reverse the alternating change): 12+6=1812 + 6 = 18. However, since we are focusing on filling the odd-position, this calculation is supplementary information.
  4. Identify the missing number:

    • Based on the pattern identified for odd-positioned numbers, the missing number that completes the sequence is 1313.

Thus, the missing number in the sequence is 13.


Would you like further details or have any questions? Here are a few related questions that can extend this topic:

  1. How do you determine if a sequence has multiple valid patterns?
  2. What are common types of numerical sequences and their general forms?
  3. How can you identify the general term of a sequence?
  4. What techniques can be used to solve more complex sequences with varying patterns?
  5. How does recognizing arithmetic or geometric sequences help in solving problems?

Tip: Breaking down a sequence into separate patterns can often reveal hidden structures or rules, making complex problems more manageable.