Find the missing number:
$3, 9, 27, 81, . . . . .$

243

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324

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342

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432

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Solution

The correct option is A $243$
Each number is obtained by multiplying the previous number by $3$ .
Hence, pattern is $3, 3 \times 3, 9 \times 3, 27 \times 3, . . . . .$
$∴$ Missing number $= 81 \times 3 = 243$ .

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