Find the value of (1/(2*3))+(1/(3*4))+(1/(4*5))+(1/(5*6))+…..+ ((1/(9*10)).	Pick.
A) 2/5 B) 1/5 C) 4/5 D) 3/5 E) None of them
Given expression=((1/2)-(1/3))+((1/3)-(1/4))+((1/4)-(1/5))+   ((1/5)-(1/6))+….+ ((1/9)-(1/10))   =((1/2)-(1/10))=4/10 = 2/5.   2/5nswer is 2/5.
<result>A</result>
Find the value of (1/(2*3))+(1/(3*4))+(1/(4*5))+(1/(5*6))+…..+ ((1/(9*10)).