1.
Find out the wrong number in the series : 1, 1, 2, 6, 24, 96, 720

2.
Find the one which does not belong to that group ?

3.
Find the one which does not belong to that group ?

4.
Find the one which does not belong to that group ?

5.
Find the one which does not belong to that group ?

6.
Find the one which does not belong to that group ?

7.
Find the one which does not belong to that group ?

8.
Find the one which does not belong to that group ?

9.
Find the one which does not belong to that group ?

10.
Find the one which does not belong to that group ?