100-98+96-94+.......+8-6+4-2
= (100 - 98) + (96 - 94) + ... + (8 - 6) + (4 - 2)
= 2 + 2 + ... + 2 + 2
= 2.50
= 100
100 - 98 + 96 - 94 + ... + 8 - 6 + 4 - 2 (
= ( 100 - 98 ) + ( 96 - 94 ) + ... + ( 8- 6 ) + ( 4 - 2 )
= 2 + 2 + ... + 2 + 2
= 2 . 50
= 100
100 - 98 + 96 - 94 + ... + 8 - 6 + 4 - 2 (
= ( 100 - 98 ) + ( 96 - 94 ) + ... + ( 8- 6 ) + ( 4 - 2 )
= 2 + 2 + ... + 2 + 2
= 2 . 50
= 100