`E = 1 + 3 - 5 - 7 + 9 + 11 - ........... - 95 + 97 - 99 + 101`
`E= 1 + (3 - 5 - 7 + 9 ) + ....... - (93 - 95 -97 + 99) +101`
`E = 1 + 0 + .....+0+101`
`E = 1 + 101`
`E = 102`
E=1+3−5−7+9+11−...........−95+97− 99+101
E=1+(3−5−7+9)+.......−(93 −95−97+99)+101
E=1+0+.....+0+101
E=1+101
E=102