Question

1=5,2=10,3=15,4=20,5=? :D

Answer 1

{ Answer  is = 1 }

Why answer is 1 ?

According to the question , it's given that :-  '' 1=5,2=10,3=15,4=20 '' and is asked to find the value of 5 = ? 

But it's given that 1 = 5 , similarly 5 will be also equal to 1 .

Therefore , the answer is 1 . 

Hope you get it !

Answer 2

1=5.
2=10.
3=15.
4=20.
5=?
1=1*5=5.
2=2*5=10.
3=3*5=15.
4=4*5=20.
5=5*5=25.
So, 
25 is the answer.

But, as 1=5, y can't be 5=1??
but, here 1=5 is just assigning values for a specific period.
Is, truly 1-=5. No, not at all. It is just assigning the values; and, thus as per the orrder of the series, 5=25.