Table:
0
A
B
C
D
E
F
1
Name
Pennant number
Ordered
Builder
Commissioned
Fate
2
Agosta
Q178
1930
Arsenal de Cherbourg
30 April 1934
scuttled, Brest, 18 June 1940
3
Sfax
Q182
1930
ACL, Nantes
6 December 1934
torpedoed by U-37, 19 December 1940
4
Casabianca
Q183
1930
ACL Nantes
2 February 1935
survived the war. BU 1952
5
Bévéziers
Q179
1930
Arsenal de Cherbourg
14 October 1935
sunk, 5 May 1942
6
Ouessant
Q140
1930
Arsenal de Cherbourg
30 November 1936
scuttled, Brest, 18 June 1940
7
Sidi Ferruch
Q181
1930
Arsenal de Cherbourg
9 July 1937
sunk, 11 November 1942

Questions and formulas:
Question: Sfax has a total ordered number of?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="sfax"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,A2:A7="sfax"),3))
Level: medium