Table:
0
A
B
C
D
E
F
1
Version
Code name
Release date
Desktops
Servers
Kernel Version
2
4.10
Warty Warthog
20 October 2004
Old version, no longer supported: 30 April 2006
Old version, no longer supported: 30 April 2006
2.6.8
3
5.04
Hoary Hedgehog
8 April 2005
Old version, no longer supported: 31 October 2006
Old version, no longer supported: 31 October 2006
2.6.10
4
5.10
Breezy Badger
13 October 2005
Old version, no longer supported: 13 April 2007
Old version, no longer supported: 13 April 2007
2.6.12
5
6.06 LTS
Dapper Drake
1 June 2006
Old version, no longer supported: 14 July 2009
Old version, no longer supported: 1 June 2011
2.6.15
6
6.10
Edgy Eft
26 October 2006
Old version, no longer supported: 25 April 2008
Old version, no longer supported: 25 April 2008
2.6.17
7
7.04
Feisty Fawn
19 April 2007
Old version, no longer supported: 19 October 2008
Old version, no longer supported: 19 October 2008
2.6.20
8
7.10
Gutsy Gibbon
18 October 2007
Old version, no longer supported: 18 April 2009
Old version, no longer supported: 18 April 2009
2.6.22
9
8.04 LTS
Hardy Heron
24 April 2008
Old version, no longer supported: 12 May 2011
Old version, no longer supported: 9 May 2013
2.6.24
10
8.10
Intrepid Ibex
30 October 2008
Old version, no longer supported: 30 April 2010
Old version, no longer supported: 30 April 2010
2.6.27
11
9.04
Jaunty Jackalope
23 April 2009
Old version, no longer supported: 23 October 2010
Old version, no longer supported: 23 October 2010
2.6.28
12
9.10
Karmic Koala
29 October 2009
Old version, no longer supported: 30 April 2011
Old version, no longer supported: 30 April 2011
2.6.31
13
10.04 LTS
Lucid Lynx
29 April 2010
Old version, no longer supported: 9 May 2013
Older version, yet still supported: April 2015
2.6.32
14
10.10
Maverick Meerkat
10 October 2010
Old version, no longer supported: 10 April 2012
Old version, no longer supported: 10 April 2012
2.6.35
15
11.04
Natty Narwhal
28 April 2011
Old version, no longer supported: 28 October 2012
Old version, no longer supported: 28 October 2012
2.6.38
16
11.10
Oneiric Ocelot
13 October 2011
Old version, no longer supported: 9 May 2013
Old version, no longer supported: 9 May 2013
3.0
17
12.04 LTS
Precise Pangolin
26 April 2012
Older version, yet still supported: April 2017
Older version, yet still supported: April 2017
3.2
18
12.10
Quantal Quetzal
18 October 2012
Older version, yet still supported: April 2014
Older version, yet still supported: April 2014
3.5
19
13.04
Raring Ringtail
25 April 2013
Older version, yet still supported: January 2014
Older version, yet still supported: January 2014
3.8
20
13.10
Saucy Salamander
17 October 2013
Current stable version: July 2014
Current stable version: July 2014
3.11

Questions and formulas:
Question: What is the code name of the OS with Kernel version 2.6.27?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="2.6.27"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,F2:F20="2.6.27"),2))
Level: medium
Question: When was the release date of the operating system with kernel version 2.6.31?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="2.6.31"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,F2:F20="2.6.31"),3))
Level: medium
Question: What is the status of the desktop version of the OS with kernel version 2.6.31?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="2.6.31"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,F2:F20="2.6.31"),4))
Level: medium
Question: How many servers have a kernel version 3.11?
Formula: ROWS(UNIQUE(FILTER(E1, F1="3.11")))
Formula2: ROWS(UNIQUE(FILTER(E2:E20, F2:F20="3.11")))
Level: medium