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What is the average of the first (4) terms of the geometric progression (15,30,60,120,\ldots)?
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Answer and explanation
Correct answer: (55)
The sum of the first four terms is (15+30+60+120=225), and the average is (\frac{225}{4}), so none of the given options is correct. In average questions, first find the sum.
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What is the correct answer to this question?
(55)
Why is this the correct answer?
The sum of the first four terms is (15+30+60+120=225), and the average is (\frac{225}{4}), so none of the given options is correct. In average questions, first find the sum.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Geometric Progression.
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