R-SAT
Exam
The principal wants to arrange 5 students on the platform such that the boy Shyam occupies the second position and such that the girl Geetha is always adjacent to the girl Anitha. How many such arrangements are possible?
option
A. None
B. 7!*5!
C. 3!*5!
D. 3!*7!
E. 3!*2!
Read Solution (Total 5)
-
- option E - 3!*2!
- 11 years agoHelpfull: Yes(1) No(1)
- In 5 students boy Shyam already occupy the postion 2nd.
so we need to arrange remaining 4 postions. such that Anitha,Geetha both comes adjecent/together.
_ shyam _ (AG)
_ _(AG)= 3! & A,G can becomes like(AG)/(GA)= 2! arrangements
= 3!*2! (ans E) - 10 years agoHelpfull: Yes(0) No(2)
- since shyam has already taken one spot, number of positions left is 4...consider (geeta and anita ) as one block...so total number of positions reduced to 3...it can be filled in 3! ways. again the one block considered can be arranged in 2! ways...hence answer is...3!*2!
- 10 years agoHelpfull: Yes(0) No(0)
- 3!*2!
reason: shyam,geetha and anitha are already ocuupied thier places in 3! ways and remaining two placces in 2! ways - 10 years agoHelpfull: Yes(0) No(0)
- Option E)3!2!
- 9 years agoHelpfull: Yes(0) No(0)
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