The sequence x1, x2, x3,..., is such that Xn = 1/n - (1/(n+1)). What is the sum of the first 10 terms of the sequence?	Choose one:	A) 201/100	B) 99/100	C) 100/101	D) 1/10000	E) 10/11
Easy task and accomplish   X1=1-1/2   x2=1/2-1/3   x3=1/3-1/4   .....   x10=1/10-1/11   sum=X1+X2+X3+....X10=1-1/2+1/2-1/3+.......1/99-1/100+1/10-1/11=1-1/11=10/11   10/11 is the answer
<result>E</result>
The sequence x1, x2, x3,..., is such that Xn = 1/n - (1/(n+1)). What is the sum of the first 10 terms of the sequence?