Shade:

(i) 1/2 of the circles in box (a)

(ii) 2/3 of the triangles in box (b)

(iii) 3/5 of the squares in box (c).

(a)

(b)

(c)

(a) Here,

As per the question,

We can observe that,

There are in all twelve circles in the box.

And,

We have to shade 1/2 of these circles.

Now,

Since,

12 × = 6

Therefore,

We have to shade 6 circles

(b) Here,

As per the question,

We can observe that,

There are in all nine triangles in the box.

And,

We have to shade 2/3 of these triangles.

Now,

Since,

9× = 6

Therefore,

We have to shade 6 triangles

(c) Here,

As per the question,

We can observe that,

There are in all fifteen squares in the box.

And,

We have to shade 3/5 of these squares.

Now,

Since,

15× () = 9

Therefore,

We have to shade 9 squares