Table:
0
A
B
C
D
E
F
1
Artist
Country
Number-one single(s)
Year
Weeks at #1
Straight to #1 ?
2
Kamini
France
" Marly-Gomont "
2007
4
No
3
Kaoma
Brazil
" Lambada "
1989
12
No
4
Kesha
United States
" Tik Tok "
2010
2
No
5
Khaled
Algeria
" Aïcha "
1996
1
No
6
Khaled
Algeria
" Même pas fatigué !!! "
2009
7
Yes
7
K.Maro
Canada
" Femme Like U (Donne-moi ton corps) "
2004
1
No

Questions and formulas:
Question: How many weeks was K.Maro at #1?
Formula: SUMIFS(E1,A1,"K.Maro")
Formula2: SUMIFS(E2:E7,A2:A7,"K.Maro")
Level: easy
Question: How many weeks was France at #1?
Formula: SUMIFS(E1,B1,"France")
Formula2: SUMIFS(E2:E7,B2:B7,"France")
Level: easy