The principal wants to arrange 5 students on a platform so that the boy Salim always occupies the se...........

Quantitative Aptitude ( CCS) Permutation & Combination

The principal wants to arrange 5 students on a platform so that the boy Salim always occupies the second position from left and the gist Sita is always adjacent to girl Rita. How many such arrangements are possible?

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Explanation:

Sita and Rita can be placed in 2 ways (seats 3,4 or seats 4,5) and they can be further arranged in 2 ways ( S R or R S )
Salim can be placed in 1 way
other two person can be placed in 2! ways
hence it will be
2*2!*2! = 8