Mathematics
Sum of first n natural numbers
Practice questions
What is half of the sum of the first (40) natural numbers?What is the sum of the last (5) terms in (1+2+3+\cdots+45)?If the sum of the first (20) natural numbers is (210), what is the sum of the first (21) natural numbers?What is the difference between the sum of the first (36) natural numbers and the sum of the first (30) natural numbers?For which (n) will (S_n=780)?A figure has (27) rows of dots, and the (k)th row has (k) dots. How many dots are there in total?What is the value of (S_{16}+16)?What remains after subtracting (1000) from the sum of the first (50) natural numbers?If (S_m=210) and (S_n=325), what is the value of (n-m)?What is the sum of (11+12+13+\cdots+30)?The sum of the first (44) natural numbers is equal to which value?If \(S_n\) is the sum of the first n natural numbers, which relation correctly represents the change from \(S_n\) to \(S_{n+1}\)?The sum of the first (60) natural numbers is (1830). What is the sum of the first (59) natural numbers?What will be the value of (S_{14}+S_{15})?If (1+2+3+\cdots+n=903), choose the value of (n).In a practice session, marks from (1) to (15) are scored in the first (15) steps, and no marks are scored in the next (10) steps. What is the total score?What is the sum of the first (52) natural numbers?What is the value of (S_{33}-S_{22})?If the sum of the first (n) natural numbers is (1035), what is (n)?Which sum is formed when (20) is added to (1+2+3+\cdots+19)?