List of top Arithmetic and Mental Ability Questions on Number Series asked in KLEE

The next term of the sequence 1 , 8 , 27 , 64 , 125 , ____.
If 2 + 4 = 20 and 3 + 5 = 34, then 6 + 9 =
What comes next in the sequence; 1, 6, 13, 22, 33, ?