


1.
DEF, DEF2, DE2F2, _____, D2E2F3
2.
Look at this series: 5.2, 4.8, 4.4, 4, ... What number should come next?
3.
Look at this series: 2, 6, 18, 54, ... What number should come next?
4.
Look at this series: 80, 10, 70, 15, 60, ... What number should come next?
5.
Look at this series: 544, 509, 474, 439, ... What number should come next?
previous
1
next
