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Number of ways in which 5 alike red bott...

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

A

`6!xx5!xx2!`

B

`""^(6)C_(4) xx 2!`

C

`(6!)/(2!2!)`

D

`(6!)/(2!2!2!)`

Text Solution

Verified by Experts

D

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