Question

think of any one digit no.
add 4 in it
multiply the result with 2
now divide the result by 2
now subtract that no from the result that u thought of in the beginning
answer is 4 ???
m I correct
Why So???

Answer 1

4 is the answer
Let the requored no. be x
4x*2=8
8÷2=4

Answer 2

Let the no. be a
Therefore adding 4 =a + 4
Then According to question
2(a + 4) ÷ 2 - a. 2 multiplied and 2 divided will cancel out and a - a will be 0 so only 4 will remain si always the answer will be 4
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