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Type the missing number in this sequence:\newline13,  11,  ____,  7,  513,\;11,\;\_\_\_\_,\;7,\;5

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Q. Type the missing number in this sequence:\newline13,  11,  ____,  7,  513,\;11,\;\_\_\_\_,\;7,\;5
  1. Identify Pattern: Identify the pattern in the sequence.\newlineWe notice that the sequence is decreasing. To find the pattern, we look at the difference between the consecutive numbers that are given.\newline1311=213 - 11 = 2\newlineSo, it seems that the sequence decreases by 22 each time.
  2. Apply Pattern: Apply the pattern to find the missing number. If we subtract 22 from 1111 (the number before the missing number), we should get the missing number. 112=911 - 2 = 9
  3. Verify Continuation: Verify the pattern continues correctly after the missing number.\newlineNow, we add 22 to the missing number to see if we get the next number in the sequence.\newline9+2=119 + 2 = 11\newlineBut we need to check if this result matches the number after the missing number in the sequence, which is 77.\newlineSince 1111 does not equal 77, this indicates that we have made a mistake.

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