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In a practice, (1) question is solved on the first day and (38) questions on the (38)th day. If the number increases by (1) daily, how many questions are solved?
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Answer and explanation
Correct answer: (741)
Total questions are (S_{38}=\frac{38\times39}{2}=741). A daily increase of (1) forms the sum of natural numbers.
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What is the correct answer to this question?
(741)
Why is this the correct answer?
Total questions are (S_{38}=\frac{38\times39}{2}=741). A daily increase of (1) forms 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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