Question

According to the instructions on the stone ,what would be there on the other side of the river

Answer 1

Answer:

The man needs to take 6 steps to cross the river. He can do this in the following ways:

Crossing the river by 6 unit steps = 1 way.

Crossing the river by 4 unit steps and 1 double step = 5C1 = 5C4 = 5 ways.

Crossing the river by 2 unit steps and 2 double steps = 4C2 = 6 ways.

Crossing the river by 3 double steps = 1 way.

Hence, the required number of ways = 1 + 5 + 6 + 1 = 13.

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