The number of ways in which a person can reach from the point A to B along the grid through the shortest path as shown in the figure is -

The number of ways in which 6X 's can be filled in the grid so that no horizontal row of the grid remains empty,

The number of ways in which 7 persons can address a meeting so that out of the three persons A, B and C, A will speak before B and B before C is

The number of shortest paths from point A to D (as show in figure)

The number of different ways in which 8 persons can stand in a row so that between two particular person A and B there are always two person, is

The number of ways in which the letters of the word PERSON can placed in the squares of the given figure so that no row remains empty is

A test charge q is moved without acceleration from A to C along the path from the point A to B and then from B to C in electric field as shown in fig. At which point( of the two) is the electric potential more and why?

A river flows with a speed more than the maximum speed with which a person can swim in still water. He intends to cross the river by the shortest possible path (i.e., he wants to reach the point on the opposite bank which directly opposite to the starting point). Which of the following is correct ?

A river flows with a speed more than the maximum speed with which a person can swim in still water. He intends to cross the river by the shortest possible path (i.e., he wants to reach the point on the opposite bank which directly opposite to the starting point). Which of the following is correct ?