If you multiply all the numbers on your mobile phone / calculator,what is the answer?

Answer :

We have numbers of mobile / Calculator are : 1 , 2 , 3 , 4 , 5 , 6 ,7 ,8, 9, 0 
So,

1 $\times$  2 $\times$3 $\times$ 4 $\times$ 5 $\times$ 6 $\times$ 7 $\times$ 8 $\times$ 9 $\times$ 0  = 0

As we know any thing multiply by 0 gives 0 ,  So

After multiplication of numbers 1 , 2 , 3 , 4 , 5 , 6 ,7 ,8, 9, 0   we get  0