Five friends A ,B ,C ,D and E go to railway station to catch the train for Chennai but
the train was delayed . they saw five vacant chairs on platform and decide to wait for train
arrival by sitting in chairs .
(i)Total number of ways of sitting arrangements of five friends
(a)120 (b) 60 (c) 24 (d)None of these
(ii)Total number of arrangements of sitting if A and B sit together
(a)120 (b) 60 (c) 48 (d)72
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opinion 120.mteuhf
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