Academic journal article ABA Banking Journal

# Sleight of Mind

Academic journal article ABA Banking Journal

# Sleight of Mind

## Article excerpt

July's TRY, TRY AGAIN puzzle brought in a good return, and most of the answers were right. The correct answer was that the error occurred in step five as you can see in the table below. The first three to respond with the correct answer were: Mike Stewart, PMP, CBCP, vice-president project management, SunTrust Bank, Atlanta, Ga., David Ribar, vice-president, Bank of America, Charlotte, N.C., and Walter E. Fry, president, First State Bank, Kiowa, Kan.

```Step 1:  Given              a=b                 No problem
Step 2:  multiply by b      ab=b2               No problem
Step 3:  subtract a2        ab-a2=b2-a2         If you insist
Step 4:  factor             a(b-a)=(b+a)(b-a)   Makes sense
Step 5:  cancer (b-a)       a=b+a               This is not logical,
Mr. Spook. Since (b-a)=O. Dividing both sides by O is not Kosher.
Step 6: substitute a for b  a=a+a               Acceptable

Step 7: combine              a=2a              A legal move
Step 8: divide by a 1=2                        Except for one move,
you might have had a career developing tax forms. … ```
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