1.

There are 2 red, 4 white and 5 blue balls. Also balls of the same colour are identical . The balls are placed in a line at random. The probability that no two blue balls are consecutive is

Answer»

`(1)/(22)`
`.^(7)C_(5)xx(6!)/(11!)`
`(5!xx6!)/(11!)`
`(.^(7)C_(5))/(11!)`

ANSWER :A


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