Question

The sum of the first 10 natural numbers is
a)54 d) 55 c] 65 d)85​

Answer 1

Answer:

55 is the correct answer of this question

Answer 2

Answer:

The series of first 10 natural numbers is an arithmetic progressions with first tern as 1 and common difference 1.

So the sum of the series will be Sn = n/2 { 2a+ ( n-1 ) d } where n is the number of terms in the series, a is the first term and d is the common difference.

S10 = 10 / 2 { 2 ( 1 ) + ( 10 -1 ) 1 }

= 5 ( 2+9)

= 5 ( 11 )

= 55

mark as a brainlieast ✌️✌️