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September 20, 2014

September 20, 2014

Posted by **Clara** on Thursday, July 26, 2012 at 3:52pm.

1. If x=1/2, what is the value of

1/x+1/x-1 ?

The answer is 0.

2. The sequence ZWYX may be changed in either two ways. Either two adjacent letters may be interchanged or the entire sequence may be reversed. What is the LEASt number of such changes needed to put the letters into alphabetical order from left to right?

The answer is 3.

- math (Partial) -
**PsyDAG**, Friday, July 27, 2012 at 11:24am1. Dividing by 1/2 is the same as multiplying by 2. How does that change your answer?

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