1.

Number of ways in which 5 alike red bottles and 6 alike blue bottles can be arranged so that exactly two pairs of blue togther, is

Answer»

`6!xx5!xx2!`
`""^(6)C_(4) XX 2!`
`(6!)/(2!2!)`
`(6!)/(2!2!2!)`

Solution :D

6 GAPS between 5 RED bottles
No. of ways `=""^(6)C_(2)xx""^(4)C_(2)=(6!)/(2!2!2!)`


Discussion

No Comment Found

Related InterviewSolutions