self Maths Puzzle

1-(1/2!+2/3!+3/4!+4/5!+..........+2011/2012!)

Read Solution (Total 2)

1-(En=1 to n=2011 n/(n+1)!)
add and sub 1 to numerator and arrange sequence as 1-((1/n!)-(1/(n+1)!)
substitute n=1 to 2011 and so many terms cancelled out finally 1/2012! is the answer
12 years agoHelpfull: Yes(2) No(0)

Will be almost equal to zero.

1-(0.5+0.33+0.125+0.03+0.006....) = 0.009
12 years agoHelpfull: Yes(1) No(0)

self Other Question

2,3,5,11,31,... ‎1) A, B, C, D, E are playing cards.... A says to B,if you give me three cards,you will hav as many as E has and if i give u 3 cards,u wil hav as many as D has.A and B together hav 10 cards more than wat D and E together hav....if B has 2cards more than wat C has n the total no.of cards b 133..den hw many cards does B have?