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2 persons have the same no of marbles at starting.after that 1st person gains 20 marbles from 2nd..n later 1st loses 2/3rd of wat he had... now 2nd has 4 times as many marbles as 1st...wat r the initial no of marbles tat each of them had?
satyam dubey
- Aug 31st, 2006
According to my opinion bala is correct
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Light glows for every 13 seconds . Howmany times did it between 1:57:58 and 3:20:47 am
Shubham Pramod Mirase
- Oct 25th, 2020
384 is the correct answer
detallica
- Jun 3rd, 2008
I have calculated the time difference in seconds , it comes out to be 4969 secs , since the light glows in 13 secs so it will glow 382.23 i.e 383 times approx.pls check the answer , iam not sure .the first guy had added an extra one in 383 , why ?
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We all know that the hour hand and the minute hand on a clock travel at diff speeds. However, there r certain occasions when they r exactly opposite each other. Can u give a simple formula for calculating the times of these occasions?
Rishi_143love
- Jul 25th, 2008
For exactly oppodite orientations,the angle between the must be an odd multiple of"pi"Now,angular speed of minute hand=2pi &n...
shashank_tangwan
- Mar 1st, 2007
CORRECTION :There is a discrepancy of 5/11 mins in overlapping and it gains by this much time in 65 mins .................. Which means that :correct clock takes 65 & 5/11 mins to overl...
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Binary Numbers (5 Questions)
In a certain code, the symbol for 0 (zero) is. * and that for 1 is $. The numb.:rs greater than 1 are to be written only by using the two symbols given above. The value of the symbol for 1 doubles itself every time it shifts one place to the left.
(For example, 4 is written as $**; and; 3 is written as $$)
(1) 260 can be represented as:
A) $****$**
B) $$*$$$$$
C)...shefali
- Sep 1st, 2015
(4) 30^2 can be represented as:
A) ($$*$$ ) $*+ $*$*$$*$
B) ($$*$$ ) $* + $$****$
C) ( $$*$$ ) $$ + $*$****
D) ( $$*$$ ) $$ + $*$**$akshata dasar
- Apr 3rd, 2010
(6).D)$*****$**explanation:256+0+0+0+0+0+4+0+0=260 (7).c)$*$$*$**/$$**$$explanation:180/51=60/17 (8).b)$*$**-$$explanation:20-3=17 (10).c)$$$*$explanation:18.7+10+.3=29
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A train blows a siren one hour after starting from the station. After that it travels at 3/5th of its speed it reaches the next station 2 hours behind schedule. If it had a problem 50 miles farther from the previous case,it would have reached 40 minutes sooner. Find the distance between the two stations
nav_cusat
- Mar 8th, 2008
It is a simple logical ques. suppose the train takes t time to cover the dis. But when there occurs a problem , whether at a dis after travelling for 1 hour or further 50 miles; it must take more than time t(as it is its normal travelling time.).
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How old is the mother puzzle
The sum of their (father, mother and son) ages is 70. The father is 6 times as old as the son.When the sum of their ages is twice 70, the father will be twice as old as the son.How old is the mother?
kiranaar10728
- Jun 18th, 2008
let father's age be 6x and son's age be x.le mother's age be yso 6x+y+x=70 given =>7x+y=70............(2) let their sum be 140 after h years.so age of father at that t...
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3 Policemen and 3 thieves had to cross a river using a small boat.
3 policemen and 3 thieves had to cross a river using a small boat. Only two can use the boat for a trip. All the 3 policemen and only 1 thief knew to ride the boat. If 2 thiefs and 1 policeman were left behind they would kill him. But none of them escaped from the policemen. How would they be able to cross the river?
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In India, water lillies grow extremely rapidly in the ponds. If the growth enlarged so much that each day it covered a surface double that which it filled the day before, so that at the end of the 20th day if entirely covered the pond, in which it grew, how long would it take water lillies of the same size at the outset and at the same rate of growth to cover the same pond?
zhangchaofan
- Nov 10th, 2009
Need 21 days. Because, the double increase in each day. So, cover the same size of pond is equal to the double increase.
shahdadpuri
- Jun 24th, 2008
We already have lillies that have covered the pond in 20days... now they would cover another pond of double the size in one more day... hence another pond of same size would be covered in half a day.
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Two clocks are ticking, 1 gains 10 mins in 1 hour & other loses 10 mins in 1 hour. At what time 2 clocks reach the same time?
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In a music concert, I was sitting only 100 feet away from the musicians.The performance was broadcasted. My sister who lives in Banglore also heard the same concert on the radio. I m sure u know that Banglore is over a 1000 miles away from calcutta and also that sound travels at 1100 feet per sec. Do u think there was any difference in the times at which the music was heard by my sister and myself. If yes, Explain?
sabareeswarcsi
- Apr 27th, 2010
His sister who lives in Bangalore will hear it first because radio waves travels much faster than sound waves. To be exact radio waves travel at a speed of 186000 miles per second which is equal to th...
kiranaar10728
- Jun 18th, 2008
As far as iam concerned i think ur sister will hear the note before u.because via satellite the programme will be transmitted as electromagnetic radio waves which travels at a rate of 3*10^8 m/s.but the difference will be negligibly small that it can be picked up neither by u nor by ur sister.
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A man bought some horses, cows and goats.
A man bought some horses, cows and goats. They were 100 in number(totally). If it costed Rs.100 to buy those 100 animals and the cost of a horse, a cow and a goat was Rs.10,Rs.3, 50 paise respectively,how much horses goats and cows did he buy?
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A thief is capable of running 20kms a day.
A thief is capable of running 20kms a day. A policeman who is to catch the thief can run 1km on the 1st day, 2kms on the 2nd day and so on. Then how long will it take the policeman to catch the thief?
moveon
- Nov 5th, 2009
A thief can run 20 kms a day.Let thief be catched in x daysso total km is 20*xkm run by policeman 1+2+3+4.........+x is an A.P is x(x+1)/2equating both20*x=x(x+1)/2x=39
navateja
- Jul 25th, 2009
Let the no. of days needed is x.In x days, the theif runs 20x kms.On day 1, police runs 1km.On day 2, he runs 2 kms.Similarly, on the xth day, he runs x kms.In the entire x days, police runs (1+2+3+.....
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A jail has 100 cells, numbered 1 to 100. The king Declares some sort of amnesty and orders the following. step 1: make sure all Cells are closed step2: reverse (if open, close; if close, open) those Cells whose numbers are divisible by 1 (in this step, all cells will be Opened); step 3: reverse those that are divisible by 2 (in this step, All even numbered cells will be closed); step 4: reverse those that are Divisible by 3; step 5: reverse those divisible by 4; step 6 to step 101: and so on . . . step 102: release the prisoners in those cells which are finally Open. How many prisoners will be released, and from which cells?
vamsi_krishna475
- Dec 26th, 2010
A small modification for the first ans is that, 1 is also opened along with all those perfect squares.
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6'o Clock Ticks 6 Times
At 6'o clock, the clock ticks 6 times. The time between first and last ticks was 30sec. How much time it takes at 12'o clock?
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Editorial / Best Answer
swatisrajput- Member Since Sep-2010 | Sep 7th, 2010
At 6'o clock ticks 6 times means 5 interval
and also given that time b/w first and last tick is 30 sec.
so
30/5=6
i.e time of each interval is 6 sec.
Similarly at 12'o clock, clock ticks 12 times i.e 11 interval
so
1 interval time=6
so 11 interval=11*6
Answer=66 secpawan
- Jan 9th, 2016
@ sharisy that is what I believe and I got the same answer as you did
onika
- Feb 11th, 2012
1 minute
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Challenging Puzzles
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