Table:
0
A
B
C
D
E
F
1
Municipality
Shire
Population
Area in km 2
Density in inhab\km 2
Distance to San Sebastians city centre in km
2
Donostia-San Sebastian
Donostialdea
183308
60.89
3,006.9
0
3
Irun
Bidasoa-Txingudi
60261
42.40
1,421.25
16.5
4
Errenteria
Donostialdea
38336
32.26
1,188.34
6.8
5
Hernani
Donostialdea
19138
39.82
480.61
6
6
Lasarte-Oria
Donostialdea
17647
6.01
2,936.27
6.5
7
Pasaia
Donostialdea
16091
11.34
1,418.96
4
8
Hondarribia
Bidasoa-Txingudi
16073
28.63
561.4
17.5
9
Andoain
Donostialdea
14215
27.17
523.19
11.5
10
Hendaye
Arrondissement of Bayonne ( France )
12596
8
1,574.5
18
11
Oiartzun
Donostialdea
9806
59.71
164.23
10.5
12
Urnieta
Donostialdea
5998
22.4
267.77
8
13
Lezo
Donostialdea
5912
8.59
688.24
10.5
14
Usurbil
Donostialdea
5718
25.64
223.01
7.6

Questions and formulas:
Question: how many shire in the land of area in km 2 is 27.17
Formula: ROWS(UNIQUE(FILTER(B1, D1=27.17)))
Formula2: ROWS(UNIQUE(FILTER(B2:B14, D2:D14=27.17)))
Level: medium