Two times one in four plus four times one in six plus six times one in eight What is 98 times one in 100

Two times one in four plus four times one in six plus six times one in eight What is 98 times one in 100

Two times one in four plus four times one in six plus six times one in eight 98 times one in 100
=(1/2)×(1/2-1/4+1/4-1/6+1/6-1/8+...+1/98-1/100)
=1/2×(1/2-1/100)
=1/2×49/100
=49/200
49 out of 200

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