Question

Find the sum of first 10 natural numbers.​

Answer 1

Step-by-step explanation:

first n positive nos form an ap

s= n(n+1)/2

s10=10(10+1)/2

s10 = 10 (11)/2

s10 = 110/2

s10= 55

Answer 2

Answer:

formula is n(n+1)÷2

n=10

THEREFORE 10(10+1)÷2=10(11)÷2=55