1.

Given that \[\text{1}+\text{2}+\text{3}+\text{4}+\text{5}+....+\text{ 98}+\text{99}\]\[+\text{1}00=\text{5}0\text{5}0,\] find. \[\text{1}+\text{2}+\text{3}+\text{4}+....+~\text{98}+\]\[\text{99 }-\text{1}00\]

A. 5150
B. 4950
C. 4850
D. 5050
Answer» D. 5050


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