Table:
0
A
B
C
D
E
1
Title
Entered chart (UK)
Peak position (UK)
Weeks on Chart (UK)
Sent to CBeebies Album
2
No. 1
11 November 2000
4
23
Yes
3
Best Friends Forever
31 March 2001
12
10
Yes
4
Do The Lollipop
4 August 2001
17
8
No
5
I Believe In Christmas
15 December 2001
9
6
No
6
Have Fun, Go Mad
14 September 2002
20
7
Yes

Questions and formulas:
Question: How many weeks did the single that entered the charts 14 september 2002 stay on the charts ?
Formula: SUMIFS(D1,B1,"14 september 2002")
Formula2: SUMIFS(D2:D6,B2:B6,"14 september 2002")
Level: easy
Question: Which single was on the Charts for 23 weeks ?
Formula: LET(query1,SUMMARIZE(A1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=23))
Formula2: LET(query1,SUMMARIZE(A2:A6,SUMX(D2:D6)),FILTER(query1,CHOOSECOLS(query1,2)=23))
Level: hard