Question

Gayatri can only walk on a straight line. She starts at a given point and every second she moves either forward or backwards with equal probability. Let n be the expected number of steps before she returns to her starting point? Answer the integer part of 4900/n.​

Answer 1

Answer:

ikdk

Explanation:

sadwdghvhdgqvjhgvdhgvdhgsd

sorry

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