In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
JK_MJ_LM_KL_
1). JKLL
2). LKKM
3). LKJM
4). KJLM
2. Choose the correct order of the given alternative : aa _ aaa _ aaaa _ aaaa_ b
3. Choose the correct order of the given alternative : c _ ac _ aa _ aa _ bc _ bcc
7. Choose the correct order of the given alternative : a _ ca _ bc _ bcc _ bca
10. Choose the correct order of the given alternative : aab _ ab _ cabcca _ bcab _ c