Table:
0
A
B
C
D
E
F
1
State
Date of Polls
Seats (ACs)
Date of Counting
Incumbent
Election Winner
2
Tripura
Saturday, 23 February 2008
60
Friday, 7 Mar 2008
CPI(M)
CPI(M)
3
Meghalaya
Monday, 3 March 2008
60
Friday, 7 Mar 2008
INC
MPA *1
4
Nagaland
Wednesday, 5 March 2008
60
Saturday, 8 March 2008
DAN
DAN *2
5
Madhya Pradesh
Thursday, 27 November 2008
230
Monday, 8 December 2008
BJP
BJP
6
Delhi
Saturday, 29 November 2008
70
Monday, 8 December 2008
INC
INC
7
Mizoram
Tuesday, 2 December 2008
40
Monday, 08 Dec 2008
MNF
INC

Questions and formulas:
Question: Which dates of polls occur in the Mizoram state?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Mizoram"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,A2:A7="Mizoram"),2))
Level: medium
Question: How many dates of polls occur in the Madhya Pradesh state?
Formula: ROWS(UNIQUE(FILTER(B1, A1="Madhya Pradesh")))
Formula2: ROWS(UNIQUE(FILTER(B2:B7, A2:A7="Madhya Pradesh")))
Level: medium