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funny numbers (Posted on 2004-07-28) Difficulty: 1 of 5
X and Y are positive integers, neither of which is divisible by 10. Their product is 100,000.

What is X + Y ?

See The Solution Submitted by Thalamus    
Rating: 2.3636 (11 votes)

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Solution Reference by Googling | Comment 9 of 19 |

I googled product 100000 sum 3157 and got

...

"Question 46529
Submitted on 2/25/2004

The letters a and b represent positive integers, neither of which are divisible by 10 yet the product of a and b is 100000. Find the sum of a and b.

Solution 46529

1. 100000=10^5=(2^5)*(5^5)
2. Therefore, a=2^5, b=5^5
3. And, sum=2^5+5^5=3157 "

...

from http://www.gomath.com/Questions/question.php?question=46521


  Posted by Richard on 2004-07-28 14:00:19
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