Answer :
4 can be written as 4/1.
Now multiply 2/4 * 4/1 = 8/4
8/4 can be reduced by 4
8/4 = 2
4/4=1
So u have 2/1 = 2
Now multiply 2/4 * 4/1 = 8/4
8/4 can be reduced by 4
8/4 = 2
4/4=1
So u have 2/1 = 2