Add the Following Numbers and Find the Answer?
$\Begingroup$ Sum the $3$ Numbers from the List $? +? +? =30$ Fill the Boxes Using $1,3,5,7,9,11,13,15$ You Can Also Repeat the Numbers $\Endgroup$ 1 2 Answers...
Sum the $3$ numbers from the list
$?+?+?=30$ Fill the boxes using $1,3,5,7,9,11,13,15$
You can also repeat the numbers
2 Answers
I don't think there is a way to get $30$ using the numbers from that list because all those numbers are odd. We know that odd + odd = even (that's the sum of any two numbers from the list) and even + odd = odd (we add one more number from the list to the sum which is even). So, the sum is always going to be odd, but $30$ is even!
It's actually impossible since all numbers are odd and $30$ is even.
Notice that every odd number can be represented as $2n+1$. Thus $$(2n+1)+(2k+1)+(2t+1)=2·(n+k+t+1)+1$$ which is odd and not even
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
