Q 2472178036.     Four-digit numbers are to be formed using the digits 1, 2, 3 and 4; and none of these four digits are repeated in any manner. Further,

1. 2 and 3 are not to immediately follow each other
2. 1 is not to be immediately followed by 3
3. 4 is not to appear at the last place
4. 1 is not to appear at the place

How many different numbers can be formed?

IAS 2016 Prelims
A

6

B

8

C

9

D

None of the above

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