Table:
0
A
B
C
D
E
1
Currency
Code
Entry ERM II
Central rate
Official target date
2
Bulgarian lev
BGN
—
1.95583
—
3
Croatian kuna
HRK
—
—
—
4
Czech koruna
CZK
—
—
—
5
Danish krone
DKK
1 January 1999
7.46038
Formal opt-out
6
Hungarian forint
HUF
—
—
—
7
Latvian lats
LVL
2 May 2005
0.702804
1 January 2014
8
Lithuanian litas
LTL
28 June 2004
3.45280
1 January 2015
9
Polish złoty
PLN
—
—
—
10
Romanian leu
RON
—
—
—
11
Swedish krona
SEK
Not considered
—
De facto opt-out
12
British pound sterling Gibraltar pound
GBP GIP
Not considered
—
Formal opt-out

Questions and formulas:
Question: What type of currency has a code of SEK?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="sek"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,B2:B12="sek"),1))
Level: medium
Question: What code is used to represent the currency of Croatian Kuna?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="croatian kuna"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E12,A2:A12="croatian kuna"),2))
Level: medium