The subtraction below is in base seven Find the... - WAEC Mathematics 2010 Question
The subtraction below is in base seven. Find the missing number.
5 1 6 2seven
-2 6 4 4seven
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2 * 1 5
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5 1 6 2seven
-2 6 4 4seven
--------
2 * 1 5
--------
A
2
B
3
C
4
D
5
correct option: a
5 1 6 2seven
-2 6 4 4seven
--------
2 2 1 5
--------
the missing number is 2
-2 6 4 4seven
--------
2 2 1 5
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the missing number is 2
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