Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Type the missing number in this sequence:\newline00, 22, _\_, 99, 1414, 2020, 2727

Full solution

Q. Type the missing number in this sequence:\newline00, 22, _\_, 99, 1414, 2020, 2727
  1. Identify Pattern: Identify the pattern in the sequence.\newlineWe notice that the sequence is not immediately recognizable as an arithmetic or geometric sequence. We need to look at the differences between the numbers to see if there is a pattern.
  2. Calculate Differences: Calculate the differences between the numbers.\newlineThe difference between 22 and 00 is 22.\newlineThe difference between 99 and 22 is 77.\newlineThe difference between 1414 and 99 is 55.\newlineThe difference between 2020 and 1414 is 0011.\newlineThe difference between 0022 and 2020 is 77.
  3. Analyze Differences: Analyze the differences for a pattern.\newlineThe differences do not form a simple arithmetic sequence. However, we can notice that the differences between the differences are consistent: 72=57 - 2 = 5, 65=16 - 5 = 1, 76=17 - 6 = 1. This suggests that the differences themselves may be increasing by a constant amount.
  4. Determine Pattern: Determine the pattern of the differences.\newlineIf we assume the differences increase by a constant amount, we can try to find the missing difference. Since the difference between 99 and 22 is 77, and the difference between 1414 and 99 is 55, we can infer that the difference before 77 should be 72=57 - 2 = 5. Therefore, the missing number should be 2+5=72 + 5 = 7.
  5. Verify Pattern: Verify the pattern with the next number in the sequence.\newlineIf the missing number is indeed 77, then the difference between 99 and 77 should be 22, which fits our pattern of increasing differences (55, 22). The next difference is 55 (14914 - 9), and then 66 (201420 - 14), and finally 77 (9911). This confirms our pattern.

More problems from Sequences: mixed review