The number of ways in which 7 people can be arranged at a round table so that 2 particular persons may be together is a)132 b)148 c)240 d) none of these
Answers
Answered by
8
6 people ABCDE + XY (couple) can be sitted in 5 ways and two people XY can be arranged in ways.
so all of them can be arranged in |_5 × |_ 2
=(5×4×3×2×1 )×( 2×1) =240
so all of them can be arranged in |_5 × |_ 2
=(5×4×3×2×1 )×( 2×1) =240
Anonymous:
mark it Brainliest
thanks
Similar questions