Question

In a village, there are 600 children who know Maths, 400 children who know Science and 150 children who know both. Out of those who know Maths, 300 know Algebra, 400 know Geometry and 200 know both.
The number of children who know neither Algebra nor Geometry is ___(Assume that all children in the village know at least one of the subjects Maths and Science)

Answer 1

The correct answer is 350. Check the video for the approach.