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Number of ways to arrange...?
How many ways can 10 people, named A, B, C, ...J, be arranged in a row such that A is to the right of B (somewhere to the right, not necessarily the next seat)?
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- M3Lv 71 decade agoFavorite Answer
w/o restrictions, # of ways = 10! =3,628,800
A will be to the right of B in exactly 1/2 of these
so reqd. # of ways = 10! /2
= 1,814,400
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