If these are true :
5 + 3 = 158
9 + 1 = 910
8 + 6 = 4814
4 + 4 = 168
then 7 + 3 = ??
Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.
Sign up to join this communityI'm guessing it's
2110
Why?
Because each number result is generated by appending the multiplication of the two numbers and their addition.
Or more elaborately:
$$\begin{align}5 + 3 = 15\ 8 = 5 \times 3 &\mid 5 + 3\\9 + 1 = 9\ 10 = 9 \times 1 &\mid 9 + 10\\8 + 6 = 48\ 14 = 8 \times 6 &\mid 8 + 6\\4 + 4 = 16\ 8 = 4 \times 4 &\mid 4 + 4\\7 + 3 = 21\ 10 = 7 \times 3 &\mid 7 + 3\end{align}$$
The answer would be
2110
Because
$$5\times3 = 15,\quad 5+3 = 8 \implies 158\\9 + 1 \implies 9 \times 1 = 9, \quad 9 + 1 = 10 \implies 910\\8 + 6 \implies 8 \times 6 = 48, \quad 8 + 6 = 14 \implies 4814$$
etc.
To explain a bit more
The answer to the questions is the product followed by the sum of the two numbers, so $(x\times y)(x+y)$ where the brackets are not multiplied but written next to each other.
My answer is 2110 because
$5\times3=15$, $5+3=8$, so it becomes $158$
$9\times1=9$, $9+1=10$, so it becomes $910$
It is also the same for $7\times3$