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JAMB Mathematics 2009 Objective — Question 1

Question 1 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2009 Objective paper, with the correct answer and a full explanation.

Subtract 16418 (base 9) from 18630 (base 9)

A. 1121 (base 9)
B. 2112 (base 9)
C. 2113 (base 9)
D. 2211 (base 9)Correct

Explanation

18630(9) - 16418(9): borrowing as needed in base 9 subtraction gives 2211(9).

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