Table:
0
A
B
C
D
E
1
District
Vacator
Reason for change
Successor
Date successor seated
2
Georgia 3rd
Vacant
Rep-elect Washington Poe declined the seat
George W. Towns ( D )
Seated January 5, 1846
3
New Jersey 2nd
Samuel G. Wright ( W )
Died July 30, 1845
George Sykes ( D )
Seated November 4, 1845
4
Tennessee 8th
Joseph H. Peyton ( W )
Died November 11, 1845
Edwin H. Ewing ( W )
Seated ??????
5
Virginia 11th
William Taylor ( D )
Died January 17, 1846
James McDowell ( D )
Seated March 6, 1846
6
Florida At-large
Edward C. Cabell ( W )
Lost contested election January 24, 1846
William H. Brockenbrough ( D )
Seated January 24, 1846
7
New York 12th
Richard P. Herrick ( W )
Died June 20, 1846
Thomas C. Ripley ( W )
Seated December 17, 1846
8
Alabama 3rd
William L. Yancey ( D )
Resigned September 1, 1846
James L. Cottrell ( D )
Seated December 7, 1846
9
Alabama 7th
Felix G. McConnell ( D )
Died September 10, 1846
Franklin W. Bowdon ( D )
Seated December 7, 1846
10
Iowa At-large
Iowa admitted into the Union December 28, 1846
Iowa admitted into the Union December 28, 1846
S. Clinton Hastings ( D )
Seated December 28, 1846

Questions and formulas:
Question: Who is the successor when the reason for change is died November 11, 1845?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="Died November 11, 1845"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E10,C2:C10="Died November 11, 1845"),4))
Level: medium
Question: How many date of successor seated is new jersey 2nd in the district?
Formula: ROWS(UNIQUE(FILTER(E1, A1="New Jersey 2nd")))
Formula2: ROWS(UNIQUE(FILTER(E2:E10, A2:A10="New Jersey 2nd")))
Level: medium