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A pattern has rows with (1) star, then (2) stars, and so on up to (18) stars. How many stars are there in total?
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Answer and explanation
Correct answer: (171)
Total stars are (S_{18}=\frac{18\times19}{2}=171). Increasing row counts form the sum of natural numbers.
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What is the correct answer to this question?
(171)
Why is this the correct answer?
Total stars are (S_{18}=\frac{18\times19}{2}=171). Increasing row counts form the sum of natural numbers.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sum of first n natural numbers.
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