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Question

Hi, we need help with this qn. Tq!


1-2+3-4+5-6+7………+197-198+199

Answer

Method 1 :
198/2 = 99
199 – 99 = 100

Method 2 :
(199 – 1)/2 = 99
1 + 99 = 100

Ans : 100.

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