Q. Type the missing number in this sequence:3,9,27,____,243,729
Sequence Type: Is the given sequence geometric or arithmetic? Each term seems to be multiplied by a common ratio to obtain the next number. The given sequence appears to be geometric.
Find Common Ratio: Find the common ratio in the geometric sequence. Two consecutive terms are 3 and 9. 39=3 Common Ratio: 3
Multiply by Ratio and Find Missing Number: We multiply each term by the common ratio to get the next term. Sequence: 3, 9, 27, _____, 243, 729 Common Ratio: 3Find the missing number in the sequence. The number before the missing term is 27. 27×3=81Missing Number: 81
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