Question

There are 3 pens, 4 pencils and 2 erasers. You have to arrange them in a line in such a way that all the following conditions are satisfied :

1- Both the two erasers should be together but no eraser can be at the extreme ends.

2- There can be only one pen on the left of an eraser.

3- No eraser can be at the just right of a pen.

You just have to tell that how many arrangements are possible.

Answer 1

7....................................

Answer 2

7............................