Practice

Questions

Pick a topic and practice with clear explanations.

Engineering

[Diagram: 8 boxes in 3 rows: first row has 2 boxes, second row has 3 boxes, third row has 3 boxes.] The number of ways, in which the letters A, B, C, D, E can be placed in the 8 boxes of the figure below so that no row remains empty and at most one letter can be placed in a box, is :