alleryStart learning →Digits a,b,c form three-digit abc and cba, with a > c. Difference abc-cba?
A99(a + c)
B99(a - c)
C100(a - c)
D9(a - c)
Answer & Solution
Correct answer: B. 99(a - c)
The equal tens contributions cancel, leaving 99 times the difference of the outer digits.
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