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Type the missing number in this sequence:\newline____\_\_\_\_, 3131, 2121, 1111, 11

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Full solution

Q. Type the missing number in this sequence:\newline____\_\_\_\_, 3131, 2121, 1111, 11
  1. Identify Pattern: We need to identify the pattern in the sequence. Let's look at the differences between the numbers provided.\newline31−21=1031 - 21 = 10\newline21−11=1021 - 11 = 10\newline11−1=1011 - 1 = 10\newlineThe pattern is that each number is 1010 less than the previous number.
  2. Add 1010: To find the missing number, we add 1010 to the first known number in the sequence, which is 3131. \newlineMissing number ++ 1010 = 3131
  3. Solve for Missing Number: Now we solve for the missing number.\newlineMissing number = 31−1031 - 10\newlineMissing number = 2121

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