Question

It is given that: 2 +4 +6+ ......+ 200 = x, then find the value of x.
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Answer 1

Answer:

Step-by-step explanation:

a=2,d=2,l=200

l=a+(n-1)d

200=2+(n-1)2

200=2+2n-2

n=100

Sn=n/2(a+l)

Sn=100/2(2+200)

Sn = 50×202

Sn = 10100

X= 10100