If a Grand father along with his two gra...

If a Grand father along with his two grandsons and four grand daughters are to be seated in a line for a photograph so that he is always in the middle then the probability that his two grandsons are never adjacent to each other is

`(6!-4!. 4 . 2!)/(6!)`

`192/720`

`528/720`

`4/15`

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The correct Answer is:

A, C

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