Latest TCS Aptitude Question SOLUTION: sum of 1! +2! + 3! +.....+ 2012!

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(#M40024614) TCS question sum Keep an EYE

sum of 1! +2! + 3! +.....+ 2012!

Asked In TCS Disha Agarwal (11 years ago)

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vikash kumar  (11 years ago)

given: 1! +2! + 3! +.....+ 2012! , now take 2012! common, then
=2012!(1!/2012! +2!/2012! + 3!/2012! +.....+ 2011!/2012!+1)
but,2012! has very large value. so,we assume (1!/2012! +2!/2012! + 3!/2012! +.....)= zero
now , we have
2012!(0+....+0+ 2011!/2012! + 1),by solving we get
=2012!(1/2012 + 1)
=2012!(2013/2012)
ans:2013!/2012

Is this solution Helpfull? Yes (39) | No (4)  

Divya  (11 years ago)

2013!-1 is the answer

Is this solution Helpfull? Yes (7) | No (23)  

DHRUV KUMAR  (11 years ago)

anyone plz give solution....:)

Is this solution Helpfull? Yes (3) | No (2)  

anshu  (11 years ago)

2012!(1!/2012!+2!/2012!+3!/2012!+.............+1/2012+1)
value of (1!/2012!+............+1)=almost1
so,ans=approx. 2012!

Is this solution Helpfull? Yes (3) | No (3)  

Ravi Kant Sharma  (11 years ago)

n*n!=(n+1)!-n!
2013!-1

Is this solution Helpfull? Yes (3) | No (3)  

sai sindhu  (11 years ago)

(2012+1)!=2013!

Is this solution Helpfull? Yes (1) | No (2)  

ayush jain  (11 years ago)

n*n!=(n+1)!-n!=2013!-1.

Is this solution Helpfull? Yes (1) | No (3)  

Guru Pranav  (11 years ago)

2013!-1 is the answer

Is this solution Helpfull? Yes (1) | No   

Neha verma  (11 years ago)

what will be correct ans... by different answers we are getting confuse... so admin plz post the correct answer ...

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