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(10 + 1) x 10/2

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โˆ™ 2010-03-03 12:29:53
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Q: What is the formula for 10 plus 9 plus 8 plus 7 plus 6 plus 5 plus 4 plus 3 plus 2 plus 1?
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30. 2+3+5=10, 4+6=10, and 2+4+1+1+2=10.


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71 plus 2 equals 10 22 plus 31 equals 8 111 plus 22 equals?

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1/10 + 1/2 = 6/10 or 3/5


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1 + 2 + 4 + ... + 2n = 2n+1 - 1


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What is 1 over 2 plus 3 over 10?

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