Question

What part of each shape is coloured?
First guess the answer, then check.

(1)



(2)



(3)





(4)

Answer 1

Following are the guesses :
1) One-eighth of the shape is coloured.
2) One-sixth of the shape is coloured.
3) Two-ninth of the shape is coloured.
4) Four-fifteenth of the shape is coloured.

To cross-check our guess, we will divide each of the given shapes into equal parts of size of the coloured part as shown below :

(1)


(2)


(3)


(4)


On cross-checking, we now find that our guess is correct.