help

hi guest!

 

the formula for the sum is \(\dfrac{a_1+a_n}{2}\cdot n\)

where n is the number of terms

 

 

there are 200-101=99. 99+1=100 terms.

 

so, the sum is \(\dfrac{101+200}{2}\cdot 100=\boxed{15050}\)

 

i hope this helped you!

:)