Puzzle: Numbers on BlackBoard

[Eccentric]

Originally Posted by reachmonil

hey...

summit n eccentric bhai.... by the time i looked at shikha's post... n was replying... i c u both have already posted the soln... n all bng on target!! PG rocks ! will be fun preparing together for CAT05! wats say!?!

Hey, I am not going through the whole torturous cycle agin.. Ek baar to ho gaya and quite sure wouldn't be able to make it if I tried again.

[reachmonil]

Originally Posted by Eccentric

Hey, I am not going through the whole torturous cycle agin.. Ek baar to ho gaya and quite sure wouldn't be able to make it if I tried again.

so... wat plans neext?! any admits this yr!?! but..... neways..... would be fun to have u along.... seems like the spirit n enthu for Quant aint got any dimmer in u!!

[$@Ŧ@И]

Originally Posted by theshikha

My first post!

A man is walking down a street along which runs a tram line. He notices that for every 40 trams which pass him travelling in the same direction as he, 60 pass in the opposite direction. If the man's walking speed is three miles per hour, what is the average speed of the trams? (Doen't it looks like CAT'05 2 mark question! )
.

Another ques from MindSport .. mukul sharma column, TOI.. this sunday .. me right shikha ??
ANYWAYS ANSWER IS 15 !!

[khanna_sumit]

Originally Posted by reachmonil

hey...

summit n eccentric bhai.... by the time i looked at shikha's post... n was replying... i c u both have already posted the soln... n all bng on target!! PG rocks ! will be fun preparing together for CAT05! wats say!?!

is baar paper forrrhh dalenge...........

[reachmonil]

Originally Posted by khanna_sumit

is baar paper forrrhh dalenge...........

neways... which city u from!? by any chance Mumbai!?!?!? sath baith ke ammunition load karenge!! neverthless.... PG hai na.... just let my exams get over.... will spam up the Quant threads... with loads of Qs .... n hope u all do the same... to keep moi busY!

[Zorro]

Originally Posted by jockey

it's 10 2's and 15 3's,

after one full operation is done i.e all three steps, no. of 1 will be reduced by 1 as i have erased it twice and written it once, same will happen with 2 and 3

so at the end of 20 operations, no. of 1,2 and 3 will be reduced by 20. and i will have only 10 2's and 15 3's left, now i can't do step no. 1 as i don't have any 1 to erase.

so finally left no. would be ten 2's and fifteen 3's


am i right eccentric

Continue buddy..
You got... 10 2's and 15 3's .. => 10 1's n 5 3's => 5 2's n 5 1's
1 - 2 => 3...4 2' 4 1's.... => 3 2's 3'1 => 3... 2 2's 2 1's => 1 n 2 => 3..