How old is Sam?

Computer Science Level 1

What does the following python code print out? 

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current_year = 2013   
deans_birth_year = 1979   
dean_minus_kelly = 2       
dean = current_year - deans_birth_year    
kelly_minus_sam = 2    
kelly = dean - dean_minus_kelly    
sam = kelly - kelly_minus_sam    
print sam


The answer is 30.

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Maryann Vellanikaran by Maryann Vellanikaran , 36, USA

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32 solutions

Hanna Noay
Dec 22, 2013

c y=2013 d b y=1979 d m k=2 solution: dean=c y - d b y =2013-1979 =34

K m s=2 solution: kelly=dean - d m k =34 - 2 =32

sam=kelly - k m s =32 - 3 =30(answer)

7 Helpful 0 Interesting 0 Brilliant 0 Confused
Jaimeline Marcelo
Dec 24, 2013

Current year minus deans birth year= 34. Then dean minus dean minus kelly is 34-2= 32. Then 32-2= 30

5 Helpful 0 Interesting 0 Brilliant 0 Confused

34-2=30 You need to improve your elementary maths.

Bilal Zahoor - 7 years, 5 months ago

answer is 30

Ghulam MuStafa - 7 years, 5 months ago

30

manujla manu - 7 years, 3 months ago
Brijesh Pal
Dec 22, 2013

dean = current year - deans birth year dean=2013-1979 dean=34 kelly minus sam = 2 kelly = dean - dean minus kelly kelly=34-2 kelly=32 sam = kelly - kelly minus_sam sam=32-2 sam=30

3 Helpful 0 Interesting 0 Brilliant 0 Confused

we are asked to find PRINT SAM.So to find sam it is that kelly-kelly minus sam and kely=dean-dean minus kelly and kelly minus sam=2. so solve in following steps: 1)first find kelly 2)to find kelly first find dean which is current year-deans birth-year solution: dean=2013-1979=34 3)now subtract dean which 34 from dean minus kelly which is 2 solution: 34-2=32 kelly=32 4)now finally find sam 5)sam=kelly-kelly minus sam kelly is 32 and kelly minus sam=2, so answer is as follows solution: 32-2=30 which is sam

I have explained in details so that i could be understandable

Abu Bakar - 7 years, 5 months ago

current year = 2013 deans birth year = 1979 dean minus kelly = 2 dean = current year - deans birth year (2013-1979=34 ; dean=34) kelly minus sam = 2 kelly = dean - dean minus kelly (34-2=32 ; Kelly = 32) sam = kelly - kelly minus sam (32-2 = 30 ; Sam = 30)

print sam ;

Answer: 30

PRATHIK SHETTY - 7 years, 5 months ago

dean=2013-1979=34 kelly=34-2=32 sam=32-2

Jowhr Alee - 7 years, 5 months ago
Bhaskar Das
Jan 6, 2014

  1. dean = current year - deans birth_year [dean = 2013 - 1979 = 34]

  2. kelly = dean - dean minus kelly [34 - 2 = 32]

  3. sam = kelly - kelly minus sam [sam = 32 - 2 = 30 ANS]

2 Helpful 0 Interesting 0 Brilliant 0 Confused
Mushfik Rahman
Dec 27, 2013

do it backwards: sam = kelly -kelly minus sam = dean - dean minus kelly - 2 [kelly minus sam = 2] = current year - deans birth year - 2 -2 [dean minus_kelly = 2] = 2013 - 1979 -2 -2 = 30

2 Helpful 0 Interesting 0 Brilliant 0 Confused
Pasti Bisa
Dec 23, 2013

dean = 2013 - 1979 --> 34 kelly = 34 - 2 --> 32 sam = 32 - 2
= 30

2 Helpful 0 Interesting 0 Brilliant 0 Confused
Budi Utomo
Dec 23, 2013

current year = 2013, deans birth year = 1979, 34 minus kelly = 2, dean = 2013 - 1979 = 34, So kelly = 32 ,kelly minus_sam = 2 ---> 32 - sam = 2 ---> Sam =30 print sam = 30

2 Helpful 0 Interesting 0 Brilliant 0 Confused
Amelia Thomas
Nov 13, 2014

Sam and Dean Winchester, by any chance? I just put Sam Winchester's age

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Sehaj Taneja
Mar 3, 2014

32-2=30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Sriram Bodavula
Mar 3, 2014

2013-1979=34, 34-2=32, 32-2=30.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Suryatej Thota
Mar 1, 2014

y=2013 d b y=1979 d m k=2 solution: dean=c y - d b y =2013-1979 =34

K m s=2 solution: kelly=dean - d m k =34 - 2 =32

sam=kelly - k m s =32 - 3 =30(answer)

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Gururaj Kulkarni
Feb 22, 2014

dean=34 kelly=32 sam=30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Pushpendra Kumar
Feb 21, 2014

current year = 2013 deans birth year = 1979 dean minus kelly = 2 dean = current year - deans birth year=2013-1979=34 kelly minus sam = 2 kelly = dean - dean minus kelly=34-2=32 sam = kelly - kelly minus sam=32-2=30 ANSWE (30)

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Jamal Saidulu
Feb 9, 2014

dean=current year-deans birth year dean=2013-1979=34 kelly=dean-dean minus kelly=34-2=32 sam=kelly-kelly minus_sam=32-2=30

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current year=2013 dear year=1979 dean -kelly=2 dean=2013-1979=34 kelly=32-2=30 sam=32-2=30 Ans: sam=30

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Nitheesh Kethu
Jan 25, 2014

given current year=2013 deans birth year=1979 dean= cy -deansbd=2013-1979=34 dean-kelly=2 34-kelly=2 kelly=34 -2=32 kelly - sam=2 we known kelly =32 therefore sam=kelly-2=32-2=30

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Neha Mangla
Jan 21, 2014

dean = 2013 - 1979 = 34 kelly = 34 - 2 = 32 sam = 32 - 2 =30 So 30 is the answer

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Zakaria Ameen
Jan 18, 2014

dean= 2013-1979= 34

kelly= ( dean=34) minus (dean minus kelly=2)

kelly= 34-2=32

sam= (kelly=32) minus (kelly minus sam=2) -

sam= 32-2= 30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Sowmy Vivek
Jan 15, 2014

dean=34 kelly=32 by solving hence sam=30 ....soo 30 is ans

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Santosh Kumar
Jan 11, 2014

Firstly find the value of dean=34 and then find the value of kelly=32 and then find the value of sam=30 printed value is sam. Hence required ans is 30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Aleem Ahmed
Jan 11, 2014

dean = 2013-1979 dean = 34 dean-kelly = 2 34-kelly = 2 kelly = 32 kelly-sam = 2 32-sam = 2 sam = 30

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Pebrudal Zanu
Jan 9, 2014

This program will be print: 2013-1979-2-2=30

0 Helpful 0 Interesting 0 Brilliant 0 Confused

This is a simple mathematics with +/- operation which is purely depends on your concentration . Beware of the variable names like dean minus kelly and kelly minus sam .

0 Helpful 0 Interesting 0 Brilliant 0 Confused

dean=2013- 1979( current year - deans birth year)=34 kelly=34-2(dean - dean minus kelly)=32 sam =32-2(kelly - kelly minus_sam)=30(bingo)

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Jericho Guzman
Jan 6, 2014

sam = ((2013-1979) - 2) - 2 = 30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Valerian Pratama
Jan 4, 2014

First,find out how old Dean is.

2013-1979=34

Then,find out how old Kelly

Dean-Kelly=2

,so

34-x=2

x=34-2 =32

Kelly-Sam=2

=

32-x=2

x=32-2

Sam is 30 years old

0 Helpful 0 Interesting 0 Brilliant 0 Confused

sam is 30 year old

Ghulam MuStafa - 7 years, 5 months ago

2013-1979-2-2=30

Sayantan Ghosh - 7 years, 1 month ago

http://www.codeskulptor.org/

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Girija Lenka
Jul 23, 2013

[2013-1979]=34 [dean's age] dean-kelly=2 {34-32=2} so 32 is kelly's age 32-30=2 {that is sam's age}

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Sam = Kelly - Kelly minus sam = (current year - deans birth_year - 2) -2 = [(2013 - 1979) - 2] -2 = 34 -4 = 30

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Joshua Crouch
Jul 22, 2013

Dean's birth year is 1979 making him 34. Kelly is two years younger than him which makes her 32. Sam is 2 years younger than Kelly which makes him 30 years old.

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Ali Rahemtulla
Jul 22, 2013

Dean=current year minus birth year= 2013 - 1979= 34 Dean minus Kelly= 2, so 34 - Kelly= 2. Thus Kelly= 34-2= 32 Kelly minus Sam= 2, so 32 - Sam= 2. Thus Sam = 30

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Leonardo Cidrão
Jul 21, 2013

Deans age = 34 ---> Kelly age=32 --> Sam age=30

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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