F2, __, D8, C16, B32, ... What number should fill the blank?
Question
F2, __, D8, C16, B32, ... What number should fill the blank?
Solution
The pattern in the sequence involves two aspects: the letters and the numbers.
For the letters, they are decreasing in alphabetical order: F, E, D, C, B. So the missing letter is E.
For the numbers, they are doubling each time: 2, 4, 8, 16, 32. So the missing number is 4.
Therefore, the missing term in the sequence is E4.
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