Question

The value of $(-5)\times (-4)\times (-3)\times (-2)\times (-1)\times 0+0\times \left(1\right)\times \left(2\right)\times \left(3\right)\times \left(4\right)\times \left(5\right)$ is?

• A. $120$
• B. $-120$
• C. $240$
• D. $0$

Answer 1

The correct option is D $0$

We need to find value of $(-5)\times (-4)\times (-3)\times (-2)\times (-1)\times 0+0\times 1\times 2\times 3\times 4\times 5$

We will take multiplication of two terms as :

$\left[\right(-5)\times (-4\left)\right]\times \left[\right(-3)\times (-2\left)\right]\times \left[\right(-1)\times 0]+[0\times 1]\times [2\times 3]\times [4\times 5]$

$=20\times 6\times 0+0\times 6\times 20$

$=0+0=0$