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Retrieving the First Value in a List that is Greater / Smaller than a Specified Number


Problem:

We want to use each of the numbers in column C as criteria when searching through List1 (column A). For each search, we want to retrieve the first number from the list that is greater than the current criteria, and also the first number that is smaller.

Solution:

Use the INDEX and MATCH functions as shown in the following Array formulas:
First greater value - {=INDEX($A$2:$A$7,MATCH(TRUE,$A$2:$A$7>C2,0))}
First smaller value - {=INDEX($A$2:$A$7,MATCH(FALSE,$A$2:$A$7>C2,0))}

To apply Array formula:
Select the cell, press and simultaneously press .