A grid is set up as shown using 5 horizontal and 6 vertical lines. What are the

Question

A grid is set up as shown using 5 horizontal and 6 vertical lines. What are the no. of ways one can go from point P to point Q walking along the grids but not moving upwards or left or retracing a grid?

Options:

A . 21

B . 35

C . 56

D . None of these

Answer: Option D
:
D
There are 4 rows and 5 columns. Using the one-zero method, number of paths will be

^{9}

_{4}

= 126 ways

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