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Sum the triple products 1x2x3, 2x3x4, and so on up to 6x7x8.
A840
B700
C756
D672
Answer & Solution
Correct answer: C. 756
With n = 6 the formula n(n + 1)(n + 2)(n + 3)/4 gives 6 x 7 x 8 x 9 / 4 = 756.
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