I am trying to solve this question but I can't. Can you please help me to find the missing number.
$\begin{array}{c|c|c}10 & 35 & 7\\\hline&2\end{array}$, $\begin{array}{c|c|c}15&?&8\\\hline&12\end{array}$
The given options are $360,370,375$ or $380$.
10 is not the answer, and the correct ans is 360 but how? Thanks in advance.! https://i.stack.imgur.com/QSWpY.jpg
I found an algorithm.
Define \begin{array}{c|c|c} a & x & c \\ \hline & b\end{array} as a relation where $x=f(a,b,c)=\dfrac{abc}{4}$. We can see that for $f(10,2,7)$, we have $x=\dfrac{10\cdot2\cdot7}{4}=35$ as desired.
Therefore, for $f(15,12,8)$, we have $x=\dfrac{15\cdot12\cdot8}{4}=360$.