Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters
Look at this series: F2, __, D8, C16, B32, ... What number should fill the blank?	Choices:
A) C6	B) F3	C) B5	D) A1	E) E4
E4   E44   The letters decrease by 1; the numbers are multiplied by 2.
<result>E</result>
Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters
Look at this series: F2, __, D8, C16, B32, ... What number should fill the blank?