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1 vote
100-99+98-97+ ... +4-3+2-1

1 Answer

4 votes
it is like 100-99=1
98-97=1
96-95=1
94-93=1
92-91=1
it is 5 every 1 until 10
so 100÷10= 10
and 10×5=50

the answer is 50
User Joe Inner
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