Five persons P Q R S T occupy seats in a row such S and T sits next to each other In how many w...........

Quantitative Aptitude (CDS) Permutation & Combination

Five persons P, Q, R, S, T occupy seats in a row such S and T sits next to each other. In how many ways 5 person sits in a row?

Explanation:

S and T sits together means in 2 ways and they are assumed at one unit
Remaining 4 persons sits in 4! ways
so,
number of ways they sit in a row is= 4! × 2
=48

By: bhavesh kumar singh

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Five persons P Q R S T occupy seats in a row such S and T sits next to each other In how many w...........

Explanation:

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