In a group of 3 girls and 4 boys, there are two boys B₁ and B₂ . The number of ways, in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but B₁ and B₂ are not adjacent to e

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In a group of 3 girls and 4 boys, there are two boys B₁ and B₂ . The number of ways, in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but B₁ and B₂ are not adjacent to each other, is :

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Correct answer: B. 144

Total - when B ₁ and B ₂ are together =2!(3!4!)-2!(3!(3!2!))=144

In a group of 3 girls and 4 boys, there are two boys B₁ and B₂ . The number of ways, in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but B₁ and B₂ are not adjacent to each other, is :

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