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Question 488406: The sum of my ones digit and tens digit is 10. My tens digit is greater than my ones digit. I am a prime number. What number am I?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! x = the 10's digit
y = the units
:
The sum of my ones digit and tens digit is 10.
x + y = 10
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My tens digit is greater than my ones digit.
x > y
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I am a prime number.
Throw out the even numbers: 8,2; 6,4
:
9, 1; 91 not prime (divisible by 7)
:
7, 3; 73 is the only prime number that satisfies
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