Question

Craig bought a mathmagic box. The box gives an output when three inputs are given to it.
What is the output when 11, 5, 9 are given as inputs?

• A. 360
• B. 470
• C. 450
• D. 420

Answer 1

The correct option is B 470

Let's try to identify the pattern of the box.
Let's take the first box into consideration.


As we can see, the pattern is:
$(7\times 3\times 4)-(7+3+4)$
$\left(84\right)-\left(14\right)=70$

Let's take the second box into consideration.


As we can see, the pattern is:
$(5\times 6\times 2)-(5+6+2)$
$\left(60\right)-\left(13\right)=47$

So, the output when 11, 5, 9 are given as input:
$(11\times 5\times 9)-(11+5+9)$
$\left(495\right)-\left(25\right)=470$