Subject :IMO Class : Class 4
What fraction of the figure is unshaded?
(A) 7/20
(B) 13/20
(C) 11/20
(D) 9/20
Ans 1:
Class : Class 7
answer is 11/20 as if unshaded is less than 1/2 we take it as 1/2
if it is more than 1/2 then we take it as 1
but if it is 1/2 we take it as 1/2 now count all of unshaded boxes you will get the answer
Ans 2:
Class : Class 8