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Aug 24, 2016 · They are about identifying a pattern in the set of equations and applying it to the unknown. The answer that jumped into my mind is to add the first number to the product of the two numbers to get the answer. That is: a + b means a + ab. This works for the known equations. 1 + 4 means 1 + 1 (4) = 5.
Apr 16, 2024 · Transcript. Misc 3 Reduce (1/(1 + 4 ) 2/(1 + )) ((3 4 )/(5 + )) to the standard form. We have to solve and then make it in Standard form a + ib (1/(1 + 4 ) 2/(1 ...
May 3, 2014 · The sum of 0 + ⋯ + n − 1 is 1 2(n − 1)n. Here n is the number of users; there are 0 comparisons needed for the first user alone, 1 for the second user (to compare them to the first), 2 for the third user, and so on, up to the n th user who must be compared with the n − 1 previous users.
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The partial sums of the series 1 + 2 + 3 + 4 + 5 + 6 + ⋯ are 1, 3, 6, 10, 15, etc. The n th partial sum is given by a simple formula: ∑ k = 1 n k = n ( n + 1 ) 2 . {\displaystyle \sum _{k=1}^{n}k={\frac {n(n+1)}{2}}.}
