Question

101 102 103 ................ 200 का योग क्या होगा

Answer 1

यह एक A. P. है
अतः Sn के formula से करेंगे
a=101 l=200 d=1 n=100
Sn=n/2(l+a)
= 100/2(200+101)
=50(301)
=15050

Answer 2

Answer:

The sum of 101+102+103+................+200 is 15050.

Step-by-step explanation:

The given expression is

$101+102+103+................+200$

Here, it is an AP, the first term is 101 and the common difference is 1.

The sum of n terms of an AP is

$S_n=\frac{n}{2}[2a+(n-1)d]$

$S_{100}=\frac{100}{2}[2(101+(100-1)(1)]$

$S_{100}=50\times [202+99]$

$S_{100}=50\times 301$

$S_{100}=15050$

Therefore the sum of 101+102+103+................+200 is 15050.