In how many ways can four children be made to stand in a line such that two of them, `A` and `B` are always together?
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Q 2443834743.
In how many ways can four children be made to stand
in a line such that two of them, `A` and `B` are always
together?
IAS 2010 Prelims
A
`6`
B
`12`
C
`18`
D
`24`
HINT
Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)
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