alleryStart learning →Nonzero digits a,b form two-digit numerals ab and ba. Their sum?
A9(a + b)
B10(a + b)
C11(a - b)
D11(a + b)
Answer & Solution
Correct answer: D. 11(a + b)
Adding 10a plus b to 10b plus a gives 11a plus 11b.
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