5 students `(A,B,C,D,E)` are to be arranged in a row so, that A occupies the 2nd position and B is always adjacent to 'C', the number of such of such arrangements is

5 students (A,B,C,D,E) are to be arranged in a row so,that A occupies the 2 nd position and B is always adjacent to 'C', the number of such of such arrangements is

The Principal wants to arrange 5 students on the platform such that the boy SALIM occupies the second position and such that the girl. SITA is always adjacent to the girl RITA. How many such arrangements are possible?

The Principal wants to arrange 5 students on the platform such that the boy SALIM occupies the second position and such that the girl. SITA is always adjacent to the girl RITA.How many such arrangements are possible?

A,A,B,B,C,C,D,E,F are arranged in a row so that no two alike alphabets are together. Find number of such arrangment

A teacher wants to arrange 5 students on the platform such that the boy ‘YUSUF’ occupies the first position and the girls ‘GEETA’ and ‘SEETA’ are always together. How many such arrangements are possible ?

A group of 2n students consisting of n boys and n girls are to be arranged in a row such that adjacent members are of opposite sex. The number of ways in which this can be done is