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Sum Formula

Class 9 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsWhat is the ratio of the sum of the first (25) natural numbers to the sum of the first (10) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60HardMathematicsWhen is the sum of the first n natural numbers odd?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60HardMathematicsWhat is the difference between the sums of the first (60) and first (40) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60HardMathematicsLet \(S_n\) denote the sum of the first n natural numbers. What is \(S_{n+1}-S_n\) when the next natural number is included in the sum?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat is the sum of the first (80) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat will be the sum of the first (68) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhy is the product \(n(n+1)\) always even in the formula \(S_n=\frac{n(n+1)}{2}\) for the sum of the first n natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat remains after subtracting (1500) from the sum of the first (65) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat is twice the sum of the first (54) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat is the sum of the first (47) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat is the difference between the sums of the first (75) and first (50) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhat is \(\frac{1}{4}\) of the sum of the first (40) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhat is the ratio of the sum of the first (30) natural numbers to the sum of the first (20) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhich formula correctly represents the sum of the first n natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsUnder which condition is the sum \(S_n\) of the first \(n\) natural numbers odd?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhat is the sum of the sum of the first (20) natural numbers and the sum of the first (5) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhat is the difference between the sums of the first (28) and first (14) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhat is the ratio of the sum of the first (15) natural numbers to the sum of the first (10) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhich algebraic expression represents the sum of the first \(n\) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61MediumMathematicsWhich formula represents the sum of the first n natural numbers, that is, from 1 to n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium