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Find 1/(1×2) + 1/(2×3) + 1/(3×4).

A1
B5/6
C11/12
D3/4
Answer & Solution
Correct answer: D. 3/4
The terms are 1/2, 1/6 and 1/12, which add to 6/12 + 2/12 + 1/12 = 9/12 = 3/4.
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