Mathematics
Sum of first n natural numbers
Practice questions
A table contains numbers from (1) to (58). What is their sum?What will be the total sum of numbers from (1) to (65)?A workbook asks (1+2+3+\cdots+70). What is the answer?In a question, natural numbers from (1) to (80) are to be added. What is the correct sum?Find the sum of the first (72) natural numbers.How much is the sum of the first (85) natural numbers?In the formula \(S_n=\frac{n(n+1)}{2}\) for the sum of the first n natural numbers, what does the factor \(n+1\) represent?In the formula \(S_n=\frac{n(n+1)}{2}\) for the sum of the first n natural numbers, what is always true about the product \(n(n+1)\)?What will be the sum of the first (95) natural numbers?What type of function of n is the sum of the first n natural numbers?An exam asked the value of (1+2+3+\cdots+95). What is the correct answer?What is the sum of the first (48) natural numbers?If the sum of the first (n) natural numbers is (406), what is the value of (n)?What is the sum of natural numbers from (21) to (35)?A student solves (1) question on the first day and (1) more question each next day for (24) days. How many questions are solved in total?What is the value of (S_{18}+S_{12}), where (S_n) is the sum of the first (n) natural numbers?What is obtained by subtracting the sum of the first (10) natural numbers from the sum of the first (25) natural numbers?If (1+2+3+\cdots+n=595), what is (n)?Find the value of (S_{30}-S_{18}).In a hall, the (1)st row has (1) chair and the (32)nd row has (32) chairs. How many chairs are there in all rows?