In the figure given below, the triangle represents printed things, the circle books and the rectangle coloured things. Each number is the number of items in that region.
How many printed books are coloured?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 23
A printed book that is coloured must lie inside all three figures: the triangle, the circle and the rectangle.
Inside the circle and the rectangle: 23 and 19
Of these, 19 lies outside the triangle (coloured books that are not printed)
Only 23 lies inside all three figures
