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Which geometric progression has first term 8 and common ratio 3?

Answer and explanation

Correct answer: 8, 24, 72, 216, ...

A geometric progression with first term 8 and common ratio 3 must begin with 8, and each later term must be three times the preceding term. Option A satisfies both requirements: 24 = 8 × 3, 72 = 24 × 3, and 216 = 72 × 3. Therefore option A is correct. Option B has ratio 3 but begins with 3, so its first term is wrong. Option C begins with 8 but adds 3 each time, making it an arithmetic progression with common difference 3. Option D follows ratio 3 but begins with 24, which would be the second term of the required progression. Both the starting value and repeated multiplication must be checked.

Related tags

Geometric-ProgressionFirst-TermCommon-RatioSequence-SelectionGeometric ProgressionSequences And ProgressionsMathematicsClass 9 Mcq

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