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Six lectures $A, B, C, D, E, F$  are to be organised only on one each day from Monday to Sunday in accordance with the following..

1. $C$ should not be organised on Friday.
2. $A$ should be organised immediately after $D$.
3. There should be a gap of two days between $B$ and $F$.
4. On one day there will be no lecture (Saturday is not that day), just before that day $F$ will be organised.
5. $E$ should be organised on Wednesday and should not be followed by $F$.

How many lectures are organised between $F$ and $D$ ?

1. None
2. One
3. Two
4. Three

ans A

monday

tuesday     C

wednesday   E

thursday      F

friday      leave

saturday    D

sunday   A

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