1993 AJHSME Problems/Problem 3

Problem

Which of the following numbers has the largest prime factor?

$\text{(A)}\ 39\qquad\text{(B)}\ 51\qquad\text{(C)}\ 77\qquad\text{(D)}\ 91\qquad\text{(E)}\ 121$

Solution

A. The prime factors of $39$ are $3$ and $13$. Therefore, the largest prime factor is $13$.

B. The prime factors of $51$ are $3$ and $17$. Therefore, the largest prime factor is $17$.

See Also

1993 AJHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 2
Followed by
Problem 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AJHSME/AMC 8 Problems and Solutions

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