Three children, each accompanied by a guardian, seek admission in a school. The principal want to interview all the 6 persons one after the other subject to the condition that no child is interviewed before its guardian. In how many ways ca

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Three children, each accompanied by a guardian, seek admission in a school. The principal want to interview all the 6 persons one after the other subject to the condition that no child is interviewed before its guardian. In how many ways can this be done -

Quantrex Academy · Accepted Answer

Correct answer: B. 90

6 ! (2 !)³ =90

Three children, each accompanied by a guardian, seek admission in a school. The principal want to interview all the 6 persons one after the other subject to the condition that no child is interviewed before its guardian. In how many ways can this be done -

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