self Maths Puzzle

‎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?

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self Other Question

1-(1/2!+2/3!+3/4!+4/5!+..........+2011/2012!) a gas is found to obey the law P^2V=constant. the initial temp. and volume are To(t not) and Vo(v not). if the gas expands to a volume 3Vo(v not), then the final temp. becomes