Q. Type the missing number in this sequence:3, 9, 27, 81, _____,729
Identify Pattern: Identify the pattern in the sequence.The sequence appears to be geometric since each term is a result of multiplying the previous term by a common ratio.
Determine Ratio: Determine the common ratio.To find the common ratio, we can divide any term by the previous term. For example, dividing the second term by the first term:39=3The common ratio is 3.
Find Missing Number: Use the common ratio to find the missing number.The term before the missing number is 81. To find the missing number, we multiply 81 by the common ratio of 3.81×3=243The missing number in the sequence is 243.
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