Question

sum of 1 to n naturals mumbers is 36 fimd the value of n​

Answer 1

Answer:

Sum of 1 to 8 naturals mumbers is 36

Step-by-step explanation:

sum of n natural number is given as

= n(n+1)/2

here sum = 36

hence, 36 = n(n+1)/2

n(n+1)=36 x 2

n(n+1)=72

solving this equation, we get

n²+n-72 =0

n²+9n-8n-72=0

n(n+9)-8(n+9)=0

(n-8)(n+9) = 0

n = 8 or n= -9

n= -9 cant be the answer

hence n= 8 is required answer.

sum of 1 to 8 naturals mumbers is 36