Problem #1 Week 5

BY: Alexis Rapach :P

Problem

• My number is 3 fewer than the sum of A and B. A is the smallest positive multiple of 13 for which the sum of its digits is prime. B is twice the

value of the Roman numeral DXLIX. What is my number?

Step 1

• First I found the roman numeral DXLIX. It was 549 so I had to double it so now I have 1098.

549+ 5491098

Step 2• Then after I found the roman numeral I had to find the smallest positive

multiple and it had to be prime. So I started with the smallest multiple of 13 and continue with the next smallest until finding one that fits the problem.

1) 13} 1 + 3 = 4 which is not prime 2) 26} 2 + 6 = 8 which is not prime 3) 39} 3 + 9 = 12 which is not prime 4) 52} 5 + 2 = 7 which is prime

Step 3

• After I found the Roman Numeral and the smallest positive multiple of 13 that’s prime, I added them together; 1098 + 52 = 1150 and in the problem if you read it says 3 less than the sum of A and B. And if the sum for A is 52 and the sum for B is 1098 and they equal 1150 together than I need to subtract 3 from 1150 and I get; 1150 – 3 = 1147

1147

ANSWER

Websites used for pictures• \http://chronizt.info/wp-content/uploads/2010/08/Funny-Math-Answers-4.jpg

(elephant)• http://www.innocentenglish.com/funny-pics/best-pics/funny-math-test-answer

1.jpg (stupid X)

• http://jacobyap.com/wp-content/uploads/2010/02/math09.gif (funny angle)• http://www.asklopan.com/pictures/funny%20test%20answers%20(11).jpg

(funny giraffe)• http://

icanhascheezburger.files.wordpress.com/2008/08/funny-pictures-cat-did-the-math-and-you-cannot-afford-the-dog.jpg (funny Cat)

• http://haha.nu/files/uploads/2006/funny-math/06.jpg (expand)• http://

www.almightydad.com/wp-content/uploads/2009/09/funny_math_logic_03.jpg (3-2 people)