Table:
0
A
B
C
D
E
F
1
Candidate
Background
Original team
Age
Hometown
Result
2
Thomas Ben
Divisional Manager
Number 8
34
Auckland
Hired by Serepisos
3
David Wyatt
Self-employed - media agency
Number 8
27
Auckland
Fired in the Season Finale
4
Catherine Livingstone
Self-employed - concierge service
Athena
33
Auckland
Fired in week 12
5
Karen Reid
Self-employed - practices in alternative medicine
Athena
33
Auckland
Fired in week 11
6
Linda Slade
University Student
Athena
21
Christchurch
Fired in week 10
7
Nicky Clarke
PR specialist
Athena
28
Auckland
Fired in week 9
8
Daniel Phillips
Advertising Account Manager
Number 8
31
Auckland
Fired in week 8
9
Meena Chhagan
Accountant
Athena
24
Wellington
Fired in week 7
10
Richard Henry
Getfrank Founder
Number 8
26
Auckland
Fired in week 7
11
Paul Natac
Infringement Relationship Manager
Number 8
28
Auckland
Fired in week 6
12
Chris Whiteside
Accountant
Number 8
28
Christchurch
Fired in week 4
13
Kirsty Parkhill
Business Development Manager
Athena
35
Wellington
Fired in week 3

Questions and formulas:
Question: How many times was the result is hired by serepisos?
Formula: ROWS(UNIQUE(FILTER(E1, F1="Hired by Serepisos")))
Formula2: ROWS(UNIQUE(FILTER(E2:E13, F2:F13="Hired by Serepisos")))
Level: medium
Question: What is the age when the result is fired in week 8
Formula: SUMIFS(D1,F1,"Fired in week 8")
Formula2: SUMIFS(D2:D13,F2:F13,"Fired in week 8")
Level: easy
Question: What is the background of the candidate daniel phillips?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Daniel Phillips"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,A2:A13="Daniel Phillips"),2))
Level: medium
Question: How many times was the background self-employed - media agency?
Formula: ROWS(UNIQUE(FILTER(A1, B1="Self-employed - media agency")))
Formula2: ROWS(UNIQUE(FILTER(A2:A13, B2:B13="Self-employed - media agency")))
Level: medium
Question: How many times was the background university student?
Formula: ROWS(UNIQUE(FILTER(F1, B1="University Student")))
Formula2: ROWS(UNIQUE(FILTER(F2:F13, B2:B13="University Student")))
Level: medium
Question: What is the candidate whose age is 27?
Formula: LET(query1,SUMMARIZE(A1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=27))
Formula2: LET(query1,SUMMARIZE(A2:A13,SUMX(D2:D13)),FILTER(query1,CHOOSECOLS(query1,2)=27))
Level: hard