Question

find the sum of all even number from 1to 350

Answer 1

We can solve it in an easy way..

The formula of finding the sum of all even no.s is n*(n+1)

Where n=((first even no+last even no)÷2)-1

Here first even no is 2 and ladt is 350

n=((2+350)÷2)-1=176–1=175

Our ans is 175*(175+1)=175*176=30800

I think this is easier than the ap method

Answer 2

✌hey here is ur ans ...✌

here
a = 2
d = 2
an = 350
an = a + ( n - 1 ) d
= 350 = 2 + ( n - 1 ) × 2
= 248 = 2n - 2
= 2n = 350
= n = 350/2
= n = 175

Sn = n/2 ( a + an )
Sn = 175/2 ( 2 + 350 )
Sn = 175/2 × 352
Sn = 175 × 176
Sn = 30800

hope it will help uh ..
nd plz mark as brainliest ☺