Table:
0
A
B
C
D
E
1
Name
Birth date
Age as of 1 February 2014
Province or Country of birth
Province of residence
2
Merle Barwis
23 December 1900
113years, 40days
United States
British Columbia
3
Flora Thibodeau
20 March 1901
112years, 318days
New Brunswick
New Brunswick
4
Adéa Pellerin-Cormier
11 September 1901
112years, 143days
New Brunswick
New Brunswick
5
Colombe Benoît-Leclerc
5 February 1903
110years, 361days
Quebec
Quebec
6
Orma Slack
19 February 1903
110years, 347days
Ontario
Ontario
7
Lorna Best
4 July 1903
110years, 212days
Manitoba
British Columbia
8
Hazel Urie
28 September 1903
110years, 126days
Ontario
Ontario

Questions and formulas:
Question: Which supercentenarians were born in Manitoba?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="manitoba"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,D2:D8="manitoba"),1))
Level: medium
Question: What is the average age as of February 1, 2014 for the supercentenarians born in the United States?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="united states"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,D2:D8="united states"),3))
Level: medium