Answer:
The correct option is 3.
Step-by-step explanation:
The given expression is
[tex](4x)\cdot mn\cdot 15\cdot 2[/tex]
We need to find the simplified form of given expression.
Operate constant and variables separately.
[tex](4\cdot 15\cdot 2)\cdot(x\cdot mn)[/tex]
On simplification we get
[tex](120)\cdot(xmn)[/tex]
[tex]120mnx[/tex]
The simplified form of given expression is 120mnx.
Therefore the correct option is 3.
