Table:
0
A
B
C
D
E
1
New area code
Where
Affected area codes
Format
Effective date
2
227
Maryland
240, 301
Overlay
None
3
274
Wisconsin
920
Overlay
None
4
346
Texas
281, 713, 832
Overlay
July 1, 2014
5
364
Kentucky
270
Overlay
March 3, 2014
6
447
Illinois
217
Overlay
None
7
464
Illinois
708
Overlay
None
8
628
California
415
Overlay
None
9
629
Tennessee
615
Overlay
None
10
659
Alabama
205
Overlay
None
11
679
Michigan
313
Overlay
None
12
725
Nevada
702
Overlay
June 3, 2014
13
730
Illinois
618
Overlay
None
14
782
Nova Scotia and Prince Edward Island
902
Overlay
November 30, 2014
15
825
Alberta
403 , 587 , 780
Overlay
April 9, 2016
16
844
Toll-free
800,888,877,866,855
Overlay
December 7, 2013
17
930
Indiana
812
Overlay
October 6, 2014
18
959
Connecticut
860
Overlay
August 30, 2014

Questions and formulas:
Question: Which Affected area codes have an Effective date of august 30, 2014?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="august 30, 2014"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,E2:E18="august 30, 2014"),3))
Level: medium
Question: Which Effective date has a Where of illinois, and Affected area codes of 217?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="illinois")*(C1=217)),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,(B2:B18="illinois")*(C2:C18=217)),5))
Level: medium
Question: Which New area code is in nevada?
Formula: SUMIFS(A1,B1,"nevada")
Formula2: SUMIFS(A2:A18,B2:B18,"nevada")
Level: easy