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Algebra

Hot goIITian

Joined:	24 Apr 2008
Post:	163

9 Nov 2008 23:44:40 IST

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i want to crosscheck my ans with u

Q1. it was just a proof

Q2. ok, i derived

an = 2X-1 bn = 2X^2 - 2X + 1 . where X varies from 2 to infinity for the series

Q3. ok another simple proof using am,gm,hm

Q4. got 490 digits

Q5. c takes values ( 40X - 20 ) where X can be 2,4,5,10,20 . can calculate appropriate values for b

Q6. 86 triangles

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Tiger on prowl.......

Blazing goIITian

Joined: 27 Sep 2008

Posts: 545

10 Nov 2008 09:02:18 IST

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your answers matched with mine.
i didnt complete 2nd question and 5th question,i got 5 sequences.

Ashutosh Sharma

Blazing goIITian

Joined: 29 Sep 2008

Posts: 628

10 Nov 2008 09:22:47 IST

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3,4 ,5 match

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