Q. 61 Solve the problems and choose the correct answers.
Suppose that a robot is placed on the Cartesian plane. At each step it is allowed
to move either one unit up or one unit right, i.e., if it is at (i, j) then it an move
to either (i + 1), j) or (i, j + 1).
How many distinct paths are there for the robot to reach the point (10, 10)
starting from the initial position (0, 0)?
Answer: (A)
Explanation:
