GST Week 1 Day 1 Exampal Question 1
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The figure above shows a zebra crossing made of alternate black and white stripes. A frog sits on the middle black stripe and on each jump, it can only move from one stripe to a stripe next to it, right or left. What is the probability that after 25 jumps the frog returns to the middle black stripe?
A.0
B.1/25
C.2/25
D.13/25
E.1
[Reveal] Spoiler:
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