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What is the sum of natural numbers from (26) to (50)?

Answer and explanation

Correct answer: 950

To find the sum from 26 to 50, subtract the sum of natural numbers up to 25 from the sum up to 50. Thus, \\(S_{50}-S_{25}=\frac{50\times51}{2}-\frac{25\times26}{2}=1275-325=950\\). Therefore, the correct answer is 950. An option such as 975 can result from using an incorrect number of terms or lower limit. Exam tip: For a range sum, always subtract the sum up to one less than the lower limit.

Related tags

Natural NumbersSum Of N TermsArithmetic ProgressionRange SumClass 9 MathematicsSum Of First N Natural NumbersSequences And ProgressionsMathematics

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