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Question: hii....can anybody give me the solution of following puzzles...plz..
2. Fifty minutes ago if it was four times as many minutes past three o,clock,how many minutes is it to six o,clock?
Ans: Twenty six minutes.
some series given
3 10 20 27 54 61 _
ans .162
4). For every one hour two trains will start at the same time ,one from Bangalore to Madras another
from Madras to Bangalore On parallel tracks. All trains travel with same speed and each train will
take 5 hours to reach the other station.How many trains, one train will meet during the journey?
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| January 01, 2007 05:35:16 |
#9 |
| ksbhat |
Member Since: January 2007 Total Comments: 1 |
RE: hii....can anybody give me the solution of followi...
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| Ans to Q#4 would be this.............. Consider the 1st trains leave from both sides,viz, Bglr and Mdrs. Let us focus on the 1st train leaving from Bglr. [ train leaving from Bglr= Bglr train ; train leaving from Mdrs= Mdrs train] The 1st Bglr train, meets the 1st Mdrs train after 2.5hrs from the beginning.Now, the 2nd Mdrs train is 1 hr behind the 1st mdrs train,as it is given. So, 1st Bglr train meets the 2nd Mdrs train 0.5 hr after meeting the 1st Mdrs train.( Pls dont forget that even our 1st bglr train is moving) Hence 1st Bglr train meets the 2nd Mdrs train after 3 hrs from the beginning.The 3rd train will be 2hrs behind the 1st Mdrs train =>the 1st bglr train meets the 3rd Mdrs train (2hrs/2) after meeting the 1st mdrs train, i.e., after 3.5 hrs from the beginning.............Going on like this, we can form the following table: index of the Mdrs Train met Time elapsed from the beginning 1 2.5 hrs 2 3 hrs 3 3.5 hrs 4 4 hrs 5 4.5 hrs 6 5 hrsThe above table is w.r.t. the 1st Bglr train.Notice that this train meets the 6th Mdrs train( which will be starting towards Bglr) at its end point.Hence the 1st Bglr train meets 5 trains during its journey.( excluding the train whose start coincides with the end point of this train) If we go further...................The 2nd Bglr train meets 6 trains , the 3rd - 7 trains, the 4th- 8trains,the 5th and the rest all meet 9 trains. [ In all these cases the coinciding start and end point of a pair of trains, is not considered as meeting during the journey]So any train, other than the 1st 5 trains from either side, meets totally 9 trains during their journey.This is in my opinion. What do you all say? |
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