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Jian
Answers (1)
move 1 unit East: 8!/3!3!=1120 move 2 units East: 8!/2!2!2!2!=2520 move 3 units East: 8!/3!3!=1120 move 4 units East: 8!/4!4!=70 move 0 unit East: 8!/4!4!=70 Total paths: 4900 Note: if ant moves 1 unit East, must move back 1 unit West.
