1969 AHSME Problems/Problem 3

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Problem

If $N$, written in base $2$, is $11000$, the integer immediately preceding $N$, written in base $2$, is:

$\text{(A) } 10001\quad \text{(B) } 10010\quad \text{(C) } 10011\quad \text{(D) } 10110\quad \text{(E) } 10111$

Solution

$\fbox{E}$

See also

1969 AHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 2
Followed by
Problem 3
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All AHSME Problems and Solutions

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